This round, stained glass window, titled "Christ Showing the Helmsman the Way", was installed in the St Nicholas Seamen's Church at 139 Nelson Place, Williamstown, Victoria. The window was referred to as the Sanctuary Window and was installed in the chapel above the altar. This memorial window has significance as a part of Victoria's War Heritage and is listed on the Victorian Heritage Database. The window was donated to St Nicholas Seamen’s Church as a memorial to the members of the Merchant Navy whose lives were lost in the Second World War, 1939-1945. The donor was the Williamstown Lightkeepers Auxiliary, an independent ladies association working with the Williamstown Missions to Seamen (the Missions to Seamen organisation was re-named the Mission to Seafarers in the year 2000). The window was officially dedicated on December 14, 1947 by Geelong's Anglican Bishop, Rt. Rev. J.D. McKie. In the early months of 1948 a bronze plaque was also placed in the chapel above the altar. It recognises the lost souls of the Merchant Navy during World War 2, as well as the donor of the window, the Williamstown Lightkeepers Auxiliary. The inscription impressed on the rectangular bronze plaque, 20.4 x 10.2cm, is as follows: “IN MEMORY OF THE MEMBERS OF THE MERCHANT NAVY WHO WERE LOST IN THE SECOND WORLD WAR 1939-1945 FAITHFUL UNTO DEATH. THE WINDOW ABOVE THE ALTAR WAS ERECTED BY THE WILLIAMSTOWN LIGHTKEEPERS AUXILIARY 1947.” The Williamstown St Nicholas Seamen’s Church ceased operation in 1966. In 1979 the Victoria Missions to Seamen donated this round, stained glass window and the memorial plaque to Flagstaff Hill Maritime Village, along with many other items and furnishings. These items have been used to simulate the Williamstown Mission and Chapel as much as possible. The round space that formerly displayed the window can still be seen at the back of the old St Nicholas Seamen’s Church, previously the ES&A bank, in Williamstown. THE MISSIONS TO SEAMEN (Brief History: for more, see our Reg. No. 611, Set of Pews) The Missions to Seamen, an Anglican charity, has served seafarers of the world since 1856 in Great Britain. It symbol is a Flying Angel, inspired by a Bible verse. Today there are centr4es in over 200 ports world-wide where seamen of all backgrounds are offered a warm welcome and provided with a wide range of facilities. In Victoria the orgainsation began in Williamstown in 1857. It was as a Sailors’ Church, also known as ‘Bethel’ or the ‘Floating Church’. Its location was an old hulk floating in Hobson’s Bay, Port of Melbourne. It soon became part of the Missions to Seamen, Victoria. In the year 2000 the organisation, now named Mission to Seafarers, still operated locally in Melbourne, Portland, Geelong and Hastings. The Ladies’ Harbour Lights Guild was formed in 1906 to support the Missions to Seamen in Melbourne and other centres such as Williamstown. Two of the most significant ladies of the Guild were founder Ethel Augusta Godfrey and foundation member Alice Sibthorpe Tracy (who established a branch of the Guild in Warrnambool in 1920). The Guild continued its work until the 1960s. In 1943 a former Williamstown bank was purchased for the Missions to Seaman Club. The chapel was named St Nicholas’ Seamen’s Church and was supported by the Ladies’ Harbour Lights Guild, the Williamstown Lightkeepers’ Auxiliary and the League of Soldiers’ and Sailors’ Friends. It ceased operation in 1966. A Missions to Seamen Chapel and Recreation Room was a significant feature of ports during the late 1800s and into the 1900s. It seemed appropriate for Flagstaff Hill to include such a representation within the new Maritime Village, so the Melbourne Board of Management of Missions to Seamen Victoria gave its permission on 21st May 1979 for the entire furnishings of the Williamstown chapel to be transferred to Flagstaff Hill. The St Nicholas Seamen’s Church was officially opened on October 11, 1981 and closely resembles the Williamstown chapel. This stained glass window is significant historically for its origin in the St Nicholas Mission to Seamen's Church in Williamstown, established in 1857 to cater for the physical, social, and spiritual needs of seafarers. It was donated to the Mission by the Lightkeepers Auxiliary (Ladies Harbour Lights Guild, which was formed in 1905). The Missions to Seamen organisation had its origins in Bristol, England when a Seamen's Mission was formed in 1837. The first Australian branch was started in 1856 by the Rev. Kerr Johnston, a Church of England clergyman, and operated from a hulk moored in Hobson’s Bay; later the Mission occupied buildings in Williamstown and Port Melbourne. The connection of this window the Mission to Seamen and the Ladies Harbour Lights Guild highlights the strong community awareness of the life of people at sea, their dangers and hardships, and their need for physical, financial, spiritual and moral support. This memorial window has significant as a part of Victoria's War Heritage and is listed on the Victorian Heritage Database, Heritage Number 196973.Window, stained glass, circular, with reinforcing bars. The window represents Christ showing the helmsman the way. It shows a man in blue knitted jumper holding onto a ship's wheel, looking over his right shoulder. Behind him stands a man in a white robe pointing to his right and looking to his left, his left hand gesturing to pause. The background has various shapes and patterns of blue glass, bordered by two arcs, the outer one is white, the inner one is red. This beautiful window is in our St Nicholas Seamen's Church Collection and was brought to Warrnambool from the original St Nicholas Seamen’s Church in Williamstown. flagstaff hill, warrnambool, shipwrecked coast, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, mission to seamen williamstown, st nicholas seaman’s church williamstown, missions to seamen victoria, mission to seafarers, lightkeepers auxiliary, ladies harbour light guild, 139 nelson place williamstown, religion, religious service, sailors rest, bethel sailors’ church, bethel floating church, e. s. & a. bank williamstown, christ directing a sailor, christ showing the helmsman the way, quartermaster’s hand on the wheel, stained glass window, church window, religious window, sanctuary window, memorial window, war memorial window, victorian war heritage inventory, victorian heritage database, merchant navy ww2, 1939-1945, anglican church, bishop mckie, mrs musther, brooks robinson & co, flying angel club, williamstown lightkeepers' auxiliary, ladies' harbour lights guild, commemorative window

This private late-nineteenth-century four-wheeled carriage has been built to transport a family or group of passengers with a coachman in the front seat. It can be pulled by one horse, or by two horses if the T-pole is attached. The button fittings along each side of the carriage indicate that a folding roof or hood was once attached. The frame across the front of the carriagewas likely to have been a ‘dashboard’ with a leather or wood covering to prevent water, mud and other particles from splashing onto the passengers. The rear step between the two side-facing bench seats is adjustable to allow for ladies’ long skirts. These rear seats appear to be removable, in which case the carriage could be converted to a wagon to transport goods and equipment. The carriage could have been illuminated by oil or carbide lamps placed into the lamp holders on the sides. The carriage was kept under cover for many years in an open-front sandstone building that also included living quarters and an area that may have been stable. It was at ‘Murweh’ a Warrnambool property at 203 Liebig Street. The home is now Heritage and National Trust Listed and described as a ‘gentleman’s residence’. It was built by James Wotton Shevill in the 1860s. Shevill was a councillor from 1875 to 1878, serving in 1878 as Mayor of the Borough of Warrnambool. Jeremiah Wade lived at Murweh there from 1879-1880. By 1915 F.B. Whitehead and his family were living there, and by 1930 the address was used by Mr T.J. Rome and his family. Thomas James Rome was still using that address in September 1973 after his 100th birthday. It is believed that one of the property’s owners had been an Obstetrician in Warrnambool. The current owner re-told the story that children used to hide in the back section of the carriage and smoke, hidden from the sight of onlookers. He had heard the story from a previous owner.The well-appointed horse-drawn four-wheeled carriage is likely to have first belonged to a local councillor and past Mayor of the town of Warrnambool, J.W. Shervill, whose 1860s city property was the carriage location for many years. The carriage is a rare local example of a town-based lifestyle befitting a prosperous personality of the late 19th century. It adds to the story of Warrnambool's development as a town influenced by the port, wealth gained from shipping and the home place of prominent local people such as the Councillor and later Mayor. The side-facing rear seating is unusual for a passenger carriage. It has the feature of removable rear bench seats, allowing for the dual purpose of a carriage or wagon.Carriage; the Victorian-era horse-drawn four-wheeled open carriage has a coachman’s bench seat across the front and two side-facing bench seats in the rear. There are steps at the front on each side and a centre adjustable step and the back. It has a hinged shaft, two lamp holders and a separate T-pole. The bench seats have padded backrests upholstered in green leather and each has padded armrests at the ends. A rectangular metal frame, likely to have been a dashboard, is mounted across the front of the carriage. It has two inner vertical bars. The carriage's body is painted dark green with crimson highlights on some of the panelling. Decorative oval panels with hand-painted motifs are mounted along the sides. The side panels of the carriage have metal fastener buttons attached. The iron-rimmed wheels have sixteen wooden spokes and copper cuffs on the outside of the hubs, and the rear wheels are higher than the front wheels. Wooden brake blocks are mounted onto the back wheels and are active by a metal lever at the front right side of the carriage. The undercarriage is fitted with leaf springs on each side, mounted from front to back axles. Included are: (1) The separate T-pole that allows two horses to be harnessed to the carriage (2) Leather horse winkers with metal hardware and oval brass plate on the side of each winkerMotif painted on an oval panel [a musical lyre within a blue floral wreath flanked by scrolls] flagstaff hill maritime museum and village, warrnambool, great ocean road, shipwreck coast, murweh, buggy, cart, carriage, wagon, horse-drawn vehicle, victorian buggy, four-wheeled carriage, coachman’s seat, bench seat, side-facing benches, upholstered seats, victorian decals, heritage vehicle decoration, antique hand painting, hand painted decals, motifs, iron-rimmed wheels, wooden brake blocks, leaf springs, t-pole shaft, rear step, equine carriage, 19th century vehicle, victorian transport, transport, gentleman’s vehicle, james wotton shevill, councillor, mayor, jeremiah wade, f.b. whitehead, thomas james rome, warrnambool obstruction, warrnambool genealogy, warrnambool pioneers, victorian carriage, one horse carriage, two horse carriage, horse drawn carriage

In 2010, Emerging Writers' Festival Director Lisa Demspter, ran a Zine Bus, which travelled around Melbourne's inner north and city running workshops, panels and events. The Zine Bus was held on Saturday May 29th, 2010.A small flyer with black text and zine and green graphics, advertising the 2010 Emerging Writers' Festival Zine Bus.2010 emerging writers' festival, lisa dempster, literary programming, the wheeler centre, emerging writers', literary, festival, melbourne, zine bus

In 2010, Emerging Writers' Festival Director Lisa Demspter, ran a Zine Bus, which travelled around Melbourne's inner north and city running workshops, panels and events. The Zine Bus was held on Saturday May 29th, 2010. The badge is most likely form 2010.A small white badge with black text and a red love heart, produced for the Emerging Writers' Festival, mostly likely in 2010 and 2011.2010 emerging writers' festival, lisa dempster, literary programming, the wheeler centre, emerging writers', literary, festival, melbourne, zine bus

Yields information about the drawings that were used by the depot or workshop staff as reference drawings. Has a strong association with the depot workshop staff. Yields information about equipment on Ballarat tramcars and Signalling.Folder containing 46 blueprints or Dyeline prints of SEC tram equipment drawings. Front of folder made from a cloth back sheet of paper extended to secure to a thick cardboard runner. Rear of folder made from an old tram advertising panel or cardboard sheet, cut to size and secured to a thick cardboard runner with a cloth backing on both sides. Sheets secured with three brass screwed clips. Front cover damaged in bottom right hand corner. Rear cover breaking apart on outside around cloth binding. Heavy dirt marks from “grease” on bottom half of rear cover. Contains 46 drawings which have been individually catalogued and numbered on the rear of each drawing within the folder. Some of the drawings have been folded. Reg Item Micro Film No. Old BTPS No. SEC Drawing No Title 4807 42/4 1 VB4/8103C Westinghouse T1F Controller Main Cylinder Segments. 4867 47/2 2 BA-T8-8128 Westinghouse 225N Motor Case Bolt 4830 22/3 B 3 BA-T7-7666 Half Ball Brake Hanger Link, Driving Wheel, Brill Maximum Traction Truck 22E 4868 44/3A 4 BA-T8-8113 Split Suspension Bearing for Type W225 Motor (Westinghouse) 4869 52/2 5 BA-T8-8158 Contact Tips for G.E. Compressor Controller 4818 52/3 6 BA-T8-8159 GE B-23 Contact Finger Tips for G.E. Type ‘B’ Main Cylinder 4870 6/1 7A BA-T3-6734 Brass Nut for Switch Mechanism 4829 6/2 7B BA-T3-6735 Tongue Clip Link for Switch Mechanism 4871 6/3 7C BA-T3-6736 Fulcrum for Switch Mechanism 4872 6/4 7D BA-T3-6737 Plunger for Switch Mechanism 4832 7/6 8 BA-T3-6754 Pivot for Switch Mechanism No numbers 9 or 10 4873 17/5 11 BA-T7-7639 Detail of Motor Pinion for Brill Cars 4831.2 21/4 B 12 BA-T7-7661A Half Ball Hanger Links – single bogie trucks 4874 21/6 13A BA-T7-7663 Axle Box Inner Spring Driving Wheels Maximum Traction Truck 22E 4875 22/1 13B BA-T7-7664 Axle Box Outer Spring Driving Wheels Maximum Traction Truck 22E 4876 22/2 14 BA-T7-7665 Body Spring Brill Maximum Traction Truck 22E 4830.2 22/3B 15 BA-T7-7666A Half Ball Brake Hanger Link Driving Wheel Brill Maximum Traction Truck 22E 4877 22/4 16 BA-T7-7667 Body Spring, Brush Maximum Traction Truck 22E 4820.2 22/6 A 17 BA-T7-7669 Wear cups for Half Ball Brake Hanger Links, Single & Double Bogie Trucks 4878 50/5 18 BA-T8-8149 Connections of Line Breaker and Ratchet Switch for use with Drum Controller 4879 74/6 19 BA-T13-8757/9 Signal boxes, Back of Panel Wiring and External Connections 4880 45/1 20 BA-T8-8116 Trolley Harp 4806 15/3 21 BA-T7-7625 Equalizing Lever, Fulcrum, Brill 21 E truck 4881 15/5 22 BA-T7-7626A Brake Beam Fulcrum Brill 21E truck 4808 16/1 23 BA-T7-7628 Pinion Remover, GE 201G and GE 202 motors 4882 16/3 24 BA-T7-7630 Spring Posts, Brill 21E Truck 4883 21/3 25 BA-T7-7660 Brake Shoe Holder, Driving Wheel, Maximum Traction Truck Brill 22E 4884 21/5 26 BA-T7-7662 Brake Rod Guide, Single Bogie Trucks 4885 22/5 27 BA-T7-7668 Brake Shoe Holder, Pony Wheel, Maximum Traction Truck Brill 22E 4809 42/2 B 28 BA-T8-8101 Trolley Wheel and Axle 4815 42/1 B 29 BA-T8-8102A Motor Suspension Bearing, GE 202 Motor 4796.2 42/5 30 BA-T8-8104 Connection Diagram WH 225N Motor 4886 42/6 B 31 BA-T8-8105B Motor Suspension Bearing, GE 201 Motor 4797.2 48/6 32 BA-T8-8137 WH T1F Controllers 4816 49/2 33 BA-T8-8138 Connection Diagram GE 202 Motor 4887 49/3 34 BA-T8-8139 Connection Diagram K-36-J Controller 4888 50/3 35 BA-T8-8146 GE K-36-JR Controllers, with line breaker (Connection diagram) 4889 50/6 36 BA-T8-8150 Commutator for Westinghouse 225N Motor 4846 51/1 37 BA-T8-8151A Armature Bearing Lining, Commutator End, Type GE 201G Motor 4813 51/2 38 BA-T8-8152 Armature Winding Diagram Westinghouse 225 Motor 4840.2 51/40 39 BA-T8-8154A Armature Bearing Lining, Pinion End, Type GE201G Motor 4890 51/6 40 BA-T8-8156 Armature Bearing Lining, Pinion End, Type GE202A Motor 4891 52/1 41 BA-T8-8157A Armature Bearing Lining, Commutator End, Type GE202A Motor 4892 64/5 42A BA-T9-8392A Step Hangers, Single and Double Bogie Trucks, Hinged Type 4785.2 64/6B 42B BA-T9-8392/1A Step Hangers, Single and Maximum Traction Trucks, Fixed Type 4812.2 43/1 43 BA-T8-8106B GE K36J Controller, Main Cylinder Segments 4893 50/2 44 BA-T8-8145A GE B23E Controller, Main Cylinder Segments 4816 65/2 45 BA-T9-8394B Door Lock for Motorman’ Cabin Maximum Traction Trucks. 4810 73/3 46 BA-T13-8757 Ballarat Electric Tramways Signalling System, Arrangements & Details of Box.On front cover of folder, "1 - 46"trams, tramways, drawings, ballarat, sec, depot, workshops

Replica Australian Tramway Employees Association (Tramways Union) badge. Badge made on a steel/ silver backing with words "Australian Tramway Employees Association" on inner edge of badge with a black background. In centre of badge has the Australian coat of arms with a railway type spoke wheel above the logo and underneath the coat of arms the words "Federated Australia" in a banner. Has a steel ring through a hole in the top of the badge. On the outer edge with red background "Centenary Brisbane General Strike 1912-2012". Badge has a metal clip on the rear. Contained within a plastic envelope, "Centenary Brisbane General Strike" and details of the even printed on a piece of light card. Printed in Association with the book "One American Too Many" - see One American Too Many, Boss Badger and the Brisbane Trams, David Burke, Published Queensland Museum 2012.tramways, trams, unions, badges, atea, employees, brisbane

This item is part of the Federation University Art Collection. The Art Collection features over 1000 works and was listed as a 'Ballarat Treasure' in 2007.Wheel thrown urn vessel with turned foot.Runny blue-black glossy glaze with secondary glaze causing a eutectic reaction, appears syrupy. Mild crazing of glaze on inner surface. Chip on underside of foot(11mm x 5mm), likely caused at time of firing. Inscription on base: "MP 60" Sticker: "87"art, artwork, marrion popplewell, ceramics, alumni, ceramics available

The Bendigo School of Mines was opened in 1873 following the first report of the Technological Commission in 1869 which recommended the establishment of schools of design and science to meet the scientific and technical needs of the mining industry on the local gold fields. Initially mining, chemistry, geology, metallurgy and art were taught while a separate school of design was established in c. 1870 but incorporated into the School of Mines around 1883 when it was renamed as the School of Mines and Industry. In 1904 The Mechanics Institute was liquidated and its assets and buildings acquired by the School of Mines. Around 1907 a Junior Technical School commenced to operate at the School of Mines and Industry but ceased operating in 1961 with that function being transferred to the White Hills and Kangaroo Flat Technical Schools.Obverse; Ornate relief design made up of a coat of arms with mining icons in each quarter flanked by flags on either side. Per varios usus artem experientia fecit written in scroll underneath. Translation: Practice has brought skill through different exercises. (Manilius) Reverse; Outer wheel Bendigo School of Mines and Industries. Inner; 1873 /Jubilee /1923Obverse; Per varios usus artem experientia fecit Reverse; Outer wheel Bendigo School of Mines and Industries. Inner; 1873 /Jubilee /1923city of greater bendigo education, bendigo school of mines

This photograph is a record of Head Nurse, Sister Lee-Archer, and her staff of six Trained nurses, 'Nurses', of the Melbourne District Nursing Society (MDNS) outside their new Nurse’s Home and Headquarters rented at 5 Royal Terrace, Nicholson Street, Fitzroy. The bicycles seen were the first mode of transport purchased by MDNS and allowed these Nurses to extend the nursing visits they made into more Melbourne suburbs.The Melbourne District Nursing Society (MDNS) moved into larger premises at No. 5 Royal Terrace, Nicholson Street, Fitzroy in May 1904. Head trained Nurse, Lee-Archer and her staff of six Trained nurses pose outside the new ‘Nurse’s Home’ at 5 Royal Terrace, Nicholson Street, Fitzroy. The Nurses worked in the districts of North and West Melbourne, the City Proper, Carlton, Richmond, South Melbourne, Fitzroy and Collingwood making 17,954 visits during the year. The Society had a set of bye-laws which outlined the work conditions for the Nurses. Section 111.1 states ‘Each nurse shall be ready to go to her district at 9 am. She will be expected to visit urgent cases on Sundays, and will be required to work eight hours on each week day, to wear the special uniform, and live in the Home of the Society’. In February 1885, only 50 years after Melbourne was founded, it was recognized that nursing care was needed for the sick poor in inner Melbourne. The Melbourne District Nursing Society (MDNS), the first Society of its kind in Australia, was founded with one Trained nurse, known as 'Nurse' in those days, and a second employed six months later. They liaised with Doctors and worked in the now CBD, ie from Spencer Street to Spring Street and from Victoria Parade to Flinders Street. From its inception the Society was at the forefront of health care. They provided high quality nursing care; educated their patients in the curing and prevention of disease; teaching the importance of cleanliness, fresh air and good nutrition, both by verbal instruction and demonstration, even supplying soup and milk when needed. At that time they walked the streets and lane ways amid the slums of inner Melbourne carrying their nursing bag containing lotion, ointments, powders, liniment, bandages, dressings, a case of spirits, and the Nurse's own clean apron, soap and small towel for her use. They loaned equipment, such as earthenware hot water bottles, splints, urinals, bed pans, bed cradles, feeding mugs, and air-cushions as well as providing clean bed linen and nightdresses as necessary. Trained Midwives began home births in late 1893 taking midwifery bundles and providing clothes for the babe and mother as needed. This was arduous work, particularly in the heat of summer. As the work increased a third Nurse was employed but due to this arduous work many Nurses only remained with the Society for several months. Permission to use bicycles was given to the Nurses in 1898 and the Society decided to purchase their own in 1903. A business man offered ‘new free wheel’ bicycles at £13 each which included maintenance for one year. Bells and wooden frames were added, at a cost of £5 per frame, so the Nurses could carry extra equipment. Nurses’ bags were strapped to the handlebars. Soup was made for those in need 2-3 times a week and if patients could not arrange to have it collected the soup was delivered by the Nurses on their bicycles. The use of bicycles caused a change in uniform, with white pith helmets, and veils covering them and tied under their chin, now being used. They provided high quality nursing care to a range of people, often in destitute situations, some lying on rags on the floor as they had no bed, others with just a bed and maybe a thin blanket, a chair and nothing else. Their ages ranged from babes, children, adults to the elderly. The Nurses gave medications as ordered by a Doctor, dressed wounds e.g. to the injured, and surgical cases, and to those with leg ulcers; attended to patients with ‘surgical ailments’ such as ‘hip disease’; gave care to those with acute illnesses such as bronchitis, pleurisy, pneumonia, measles, and scarlet fever, as well as those with chronic illnesses such as consumption (tuberculosis), heart disease, arthritis, cancer, debility, neuritis and paralysis. In 1913 a Nurse had her Board and residence, uniforms, bicycle and laundry expenses provided and was paid £50 a year for her first six months. At the end of a year her salary was increased by £5, and later she earns £60 a year. Over the years the nurses complained that their veils became wet in the rain and asked for a change of uniform but this did not occur until 1921. Bicycles continued to be used in inner areas until 1945. Black and white photograph of six Trained nurses and their Matron, who has her hair swept up, and is wearing a long white uniform with belt, and white cap; part of her veil is seen hanging down her back, outside their Nurses Home The trained. nurses are holding their two wheeled bicycles, and are wearing long grey frocks, white collars and belts and straw hats with a Maltese cross in the centre of headband, this is held in place with scarves over the hat and tied under their chins. Their nursing bags are strapped to the handlebars of the bicycles. A black sign with the white capital letters 'Melbourne District Nursing Society. ....nursing the sick poor in their own homes' is on the metal spiked fence. The building is made of brick and five long sash windows are seen in the upper section. A metal roofed veranda, held up with four posts and two brick columns, divides the upper and lower section. A door and three long windows are seen which are partly obscured by several bushes behind the fence.melbourne district nursing society, 5 royal terrace, nicholson st carlton, nurses home, bicycles, mdns transport, royal district nursing service, rdns, mdns trained nurses, sister florence lee-archer

City Circle pamphlet - contains a map of the route and intersecting tram routes, with the route number "35" on both sides and major locations of interest. Has an image of W6 957 with a montage behind of inner Melbourne iconic buildings and the Docklands wheel. Gives times for the service with a QR code to check if the service is running that day Has Yarra Trams and PTV logos. In use during 2022/2023. On the day of cataloguing, Sunday, the service was shown as not running that day. Yields information about the City Circle tram service.Pamphlet - 3 fold DL - full colour. Two copies held.tramways, city circle, yarra trams, docklands, route 35, ptv