Dell Café, Re-Union Dinner. Employees of the Old Firm D Whyte & Co. First Annual Re-Union Dinner, Saturday, 29th March, 1947. Dell Café, Hargreaves St. Bendigo. President: T D Cairns, Hon. Sec: J Swatton. Program includes singing and music. Record of Service, name and years of service of employees. R F Gray, T D Cairns, Geo Bennett, H Kerr, F Owen, W McCoy, W Hampton, W Chapmon, G Glover, J Guidice, P Williams, T Mills, K Swift, G O'Donnell, T Chalkey, C Lee, J Swatton, P Read, A Keast, L Rowe, J Richards, T Thompson, Clem Hicks, J Ash, M McDonald, P Burns, W Durwood, P Gouglin, S Clarke, H Colee, J Cox (Jack), S Davey, J Cox (Joe), H Francis, D Grant, E A Hargreaves, H Heggie, J Hicks, R Johnson, H Maybury, J Mead, J Murphy, Gus Lynch, R Nankervis, W Webster, F Wittscheibe, C Watson, R Veal, H Shuttleworth, T Edwards, P Seeber, W Beckerleg, R Huillier, Geo Hall, Les Maher, H Sims, B Patterson, M Clarke, H Robotham, T Lansell, W A McCawley, J Boland, W Gardiner, J Graham, B Stephenson, A Rowe, Geo Nevinson, J Loddington, V Thomas, F Swatton, C Eddy, D Sterry, A Warren, J Lych, Miss Liddy, Miss L Guest. 4 pages.Cambridge Press, Bendigoevent, social, dell café, dell café, re-union dinner. employees of the old firm d whyte & co. first annual re-union dinner, saturday, 29th march, 1947. hargreaves st. bendigo. president: t d cairns, hon. sec: j swatton. program includes singing and music. record of service. r f gray, t d cairns, geo bennett, h kerr, f owen, w mccoy, w hampton, w chapmon, g glover, j guidice, p williams, t mills, k swift, g o'donnell, t chalkey, c lee, j swatton, p read, a keast, l rowe, j richards, t thompson, clem hicks, j ash, m mcdonald, p burns, w durwood, p gouglin, s clarke, h colee, j cox (jack), s davey, j cox (joe), h francis, d grant, e a hargreaves, h heggie, j hicks, r johnson, h maybury, j mead, j murphy, gus lynch, r nankervis, w webster, f wittscheibe, c watson, r veal, h shuttleworth, t edwards, p seeber, w beckerleg, r huillier, geo hall, les maher, h sims, b patterson, m clarke, h robotham, t lansell, w a mccawley, j boland, w gardiner, j graham, b stephenson, a rowe, geo nevinson, j loddington, v thomas, f swatton, c eddy, d sterry, a warren, j lych, miss liddy, miss l guest

Back To East Shelbourne Sports Carnival, Saturday, October 8, 1927. Programme. Refreshments on grounds, dance at night. 1/- Casamento's Buses. Executive Committee: President; W Harris. Vice-President; M De Araugo. Messrs. E Wright, A D Holden, W Hamilton, J Bartels, J Hinck, and H Hinck. Hon. Sec.; H M Burke. Asst. Hon. Sec.; G H Marshall. Ladies; Mesdames J Bartels, H Burke, G H Marshall, E Pocock, R Vines, and E Wright. General Committee; In addition to the above, Messrs. E Pocock, J De Araugo, F J Roberts, and W Marshall, Mesdames W Harris, A Holden, J De Araugo, F J Roberts, and Miss Pocock. Officials Judges: Messrs. T D Cairns, J Craven, and Geo. Hogben. Handicappers: Mr P Davidson (Northern District Walker's Assn.) Starter: Mr W Harris, M De Araugo, J Hinck, H Hovenden, E Pocock, W Hamilton, F J Roberts, A D Holden. Timekeeper: Mr H Hinck. Patrons: Cr, J Bartels, Nuttall & Clarke, Mrs D Punton, R S V Cocking, J Murray, and A Wells. Next 8 pages contain information on the history of East Shelbourne beginning with; This district is situated about ten miles west of south-west of Bendigo on Back Creek or Spring Creek, which received its names from the early diggers of Bendigo who, through shortage of water, were compelled to puddle at Bullock Creek or further 'back,' hence Back Creek; and because of the number of springs it contained - Spring Creek. Among the first to settle, in 1860, were Messrs. John Jenkinson, J Kilgour, T Connelly, G Nichols, R Fox, (who married Mrs James Jenkinson), Kenny, J Roberts, J Genders, J Curry, G Nevinson, Bartram, J Geary, A Nicholl, H Spencer, W Saunders, Mrs Prichard, and J Stansfield. History of East Shelbourne continues . . . Events held were Boy's (State School) Bicycle Race, Stepping the Distance (Gents), Stepping the Distance (Ladies), Bowling at the Stump, Kicking Football Through Hoop, Sheaf Toss, Bucket Ball, Sheffield, Children's Relay Race, Men's Potato Race, Tilting Rings, on Bikes, Walking Contest 1 mile, Car Race through pegs, Slow Bicycle Race 50 yards, Handicap Bicycle Race 2 miles, Tilting Rings in Cars, High Jump, Ladies' and Gent's Cigarette Race, Weight Guessing. Prizes were awarded for first and second placing of these events.In 1923, a Sports Carnival was held in the precincts of what was then a water reserve, situated south of the State School. The area was reserved for watering purposes on 1st May, 1894; and on July 15th, 1912, a small portion was excised. By 1923 its usefulness for water storage had disappeared, and being ideal for recreation purposes, it was decided, at the final meeting of the above sorts carnival, to apply for the area appointed, Mr W Harris (chairman), Messrs. G H Marshall, J Roberts, D Gill, M Connolly, R Vines, E Pocock, and H M Burke (secretary). The matter terminated in a Land Board, presided over by Mr McPherson, being held in Bendigo. The application was granted, but was not gazetted, until Messrs. W Harris and F J Roberts, with Messrs. A E Cook, MLA and Hon. H Keck, MLC interviewed the Minister for Lands. Soon afterwards, at a public meeting, the following members were elected to constitute the first Board of management, Messrs. W Harris (chairman), G H Marshall, A D Holden, F J Roberts (tres.), M D'Araugo, E Wright, and H M Burke (sec.). Since then the arena has been cleared and levelled by residents, and labor and material to the value of 150 pounds have been put into the reserve. At least 2/3rds of the program contain ads from business in Bendigo. Fordson Tractor - W Cowling, W Lewis William's Chymist, Collier footwear, William Wallace Land and Clearing Sales, Bain & Daws Groceries, Farmers & Citizens Trustees Company Bendigo Limited, Northern Seed Supply Co., Marong Bakery, Bennetts' Arcade Store, Marong Hotel, Warren's Drapery & Clothing, Jas. Friswell Butcher, Webster's Wireless, Baker & Woods Tennis Supplies, Hartleys Wireless, Cycle Hartleys, Bendigo Book & Stationery Centre Frank J Every's, T R Jones Chemist, Wool Skins & Hides F Ferguson, Furniture Carpets Linoleums Morley Johnsons, Jewellery & Silverware Prescott & Dawe, Drapers Honan & O'Toole, Stilwell's of Bendigo, Gents' & Ladies' Tailoring Hatters & Mercers Messrs. Denton Bros., Groceries Ales Wines & Spirits W Jeffrey, Ashman's Tailors Hatters Mercers, Myer's, Farmers' Grocery D Whyte & Co., Drapers & Furniture Stores The Beehive, Butcher les. Friswell, Tobacconist & Hairdresser W J Lenten, Timber Merchants & Ironmongers Hume & Iser, Stock E M Vains & Co., Ladies' & Gents' Tailors Clifford & Fulton, Printers & Stationers Bolton Bros. Pty Ltd, Bendigo Leather Shop, Everything Musical Suttons, Andrew's Auction Rooms Butter Eggs Poultry etc, Meats A C Petherick's, Albert Bush's Produce Stores & Chaff Mills, T D Cairns & Co., Jeweller C J Kirby, Casamento's Garage & Ballarat Motor Bus Service, Webster Bros. Sporting House Cycle Builders Motor Cycle & Car Agents, British Motors Bendigo, Webb's Bacon Depot. 20 pages plus coverBoltons Print, Bendigoevent, social, east shelbourne sports carnival, back to east shelbourne sports carnival, saturday, october 8, 1927. programme. refreshments on grounds, dance at night. 1/- casamento's buses. executive committee: president; w harris. vice-president; m de araugo. messrs. e wright, a d holden, w hamilton, j bartels, j hinck, and h hinck. hon. sec.; h m burke. asst. hon. sec.; g h marshall. ladies; mesdames j bartels, h burke, g h marshall, e pocock, r vines, and e wright. general committee; in addition to the above, messrs. e pocock, j de araugo, f j roberts, and w marshall, mesdames w harris, a holden, j de araugo, f j roberts, and miss pocock. officials judges: messrs. t d cairns, j craven, and geo. hogben. handicappers: mr p davidson (northern district walker's assn.) starter: mr w harris, m de araugo, j hinck, h hovenden, e pocock, w hamilton, f j roberts, a d holden. timekeeper: mr h hinck. patrons: cr, j bartels, nuttall & clarke, mrs d punton, r s v cocking, j murray, and a wells. next 8 pages contain information on the history of east shelbourne beginning with; this district is situated about ten miles west of south-west of bendigo on back creek or spring creek, which received its names from the early diggers of bendigo who, through shortage of water, were compelled to puddle at bullock creek or further 'back, ' hence back creek; and because of the number of springs it contained - spring creek. among the first to settle, in 1860, were messrs. john jenkinson, j kilgour, t connelly, g nichols, r fox, (who married mrs james jenkinson), kenny, j roberts, j genders, j curry, g nevinson, bartram, j geary, a nicholl, h spencer, w saunders, mrs prichard, and j stansfield. history of east shelbourne continues . . . events held were boy's (state school) bicycle race, stepping the distance (gents), stepping the distance (ladies), bowling at the stump, kicking football through hoop, sheaf toss, bucket ball, sheffield, children's relay race, men's potato race, tilting rings, on bikes, walking contest 1 mile, car race through pegs, slow bicycle race 50 yards, handicap bicycle race 2 miles, tilting rings in cars, high jump, ladies' and gent's cigarette race, weight guessing. prizes were awarded for first and second placing of these events.in 1923, a sports carnival was held in the precincts of what was then a water reserve, situated south of the state school. the area was reserved for watering purposes on 1st may, 1894; and on july 15th, 1912, a small portion was excised. by 1923 its usefulness for water storage had disappeared, and being ideal for recreation purposes, it was decided, at the final meeting of the above sorts carnival, to apply for the area appointed, mr w harris (chairman), messrs. g h marshall, j roberts, d gill, m connolly, r vines, e pocock, and h m burke (secretary). the matter terminated in a land board, presided over by mr mcpherson, being held in bendigo. the application was granted, but was not gazetted, until messrs. w harris and f j roberts, with messrs. a e cook, mla and hon. h keck, mlc interviewed the minister for lands. soon afterwards, at a public meeting, the following members were elected to constitute the first board of management, messrs. w harris (chairman), g h marshall, a d holden, f j roberts (tres.), m d'araugo, e wright, and h m burke (sec.). since then the arena has been cleared and levelled by residents, and labor and material to the value of 150 pounds have been put into the reserve. at least 2/3rds of the program contain ads from business's in bendigo. w cowling, w lewis william's chymist, collier footwear, william wallace land and clearing sales, bain & daws groceries, farmers & citizens trustees company bendigo limited, northern seed supply co., marong bakery, bennetts' arcade store, marong hotel, warren's, jas. friswell butcher, webster's, baker & woods, hartleys, frank j every's, t r jones chemist, f ferguson, morley johnsons, prescott & dawe, honan & o'toole, stilwell's of bendigo, messrs. denton bros., w jeffrey, ashman's, myer's, d whyte & co., beehive, butcher les. friswell, w j lenten, hume & iser, e m vains & co., clifford & fulton, bolton bros. pty ltd, bendigo leather shop, suttons, andrew's auction rooms, a c petherick's, albert bush's produce, t d cairns & co., c j kirby, casamento's garage & ballarat motor bus service, webster bros. motor cycle & car agents, british motors bendigo, webb's bacon depot

Photocopy of handwritten extracts from Dickers M. Record Vol. 1 No 1 23/11/1861 Pages 3 &4.Coy began 16/3/1861. The Directors: Thomas Burrows, Esq, Chairman, J. S. McNair, Esq, David Chaplin Sterry Esq, William Moore Esq, Edward Cook Esq. The Manager Mr. Thomas Eyre and the Secretary, Mr. J. D. Crofts. Notes mention workings, costs & labor, machinery, Amalgamation and buildings.document, gold, mining reports, mining reports, catherine reef united claimholders g m coy, dickers m record vol 1 no 1 23/11/1861 p 3 7 4, thomas burrows esq, j s mcnair esq, david chaplin sterry esq, william moore esq, edward cook esq, mr thomas eyre, mr j d crofts, murray's shaft, the bendigo and ballarat's co's, burgoine shaft, moore's shaft, kinders shaft, p n russell and co., chilian mill

J Kitchen & Sons Pty Ltd, Port Melbourne, binder (Black cover) of the Standard Procedures for production of all products under headings such as Tallow bleaching; Laundry Soap; Lux milling and packing; Candle production; Solvol manufacturing; and packing.industry - manufacturing, business and traders - soaps/candles, j kitchen & sons pty ltd, lux, solvol soap

Written and published by the author. First edition.Book "32 Gellibrand Road 3207, Life and times 1941-71". Rosalie BRAY (THRUP). Green cover with photo of 32 Gellibrand Road on coverbuilt environment - domestic, garden city, education, war - world war ii, piers and wharves - princes pier, gellibrand road, fishermans bend, millie mclean, roy mclean, sandra sleeth, rene smith, dave mclean, phyllis moore, joe watson, nancy carroll, violet pope, len pope, june moore, lois moore, sis peat, mrs mills, mary edwards, alf edwards, judy faram, swallow & ariell ltd, robert harper & co ltd, j h boyd domestic college, mrs wood mewton, oranje, ss nairana, daisy thrup, rosalie (rosie) bray nee thrup

Written and published by the author. Second edition printed 2014Book "32 Gellibrand Road 3207, Life and times 1941-71". Rosalie BRAY (THRUP). Green cover with photo of 32 Gellibrand Road on coverbuilt environment - domestic, garden city, education, war - world war ii, piers and wharves - princes pier, rosalie (rosie) bray nee thrupp, gellibrand road, fishermans bend, millie mclean, roy mclean, sandra sleeth, rene smith, dave mclean, phyllis moore, joe watson, nancy carroll, violet pope, len pope, june moore, lois moore, sis peat, mrs mills, mary edwards, alf edwards, judy faram, swallow & ariell ltd, robert harper & co ltd, j h boyd domestic college, mrs wood mewton, oranje, ss nairana, daisy thrup, rosalie (rosie) bray nee thrup

COPYRIGHT C D PRATT Black and white photograph of J Kitchen & Sons Pty Ltd. On back "Aerial view looking North East, 21st March 1939". Signs on three middle buildings 'J Kitchen & Sons Pty Ltd'; 'Pure Velvet Soap'; 'Electrine Candles'. Sign 'Australian Box Mills' on building to left "E L Pinkus' on building to Nort east and behind it 'Petersen & La...'"This photo is copyright" and information on owner - C D Pratt 86 McCracken St, Essendonindustry - manufacturing, j kitchen & sons pty ltd, australian box mills, e l pinkus, petersen

In 1990 City Librarian Wendy MORRIS commissioned Pat GRAINGER to co-ordinate a State and Council funded oral history project, the final product of which was this book. It was printed in time for the 1992 Port Melbourne Festival."They Can Carry Me Out" - Memories of Port Melbourne Blue, perfect-bound paperback book with white title and black line conversion of photo of fishing boats in the Lagoon. 96 pp, published January 1992fishermans bend, education - primary schools, piers and wharves - station pier, piers and wharves - waterside workers, education - kindergartens, celebrations fetes and exhibitions, transport - aviation and aerodrome, transport - ferries, transport - shipping, garden city, mission to seafarers, transport - railways, transport - horse, built environment - civic, built environment - domestic, built environment - commercial, built environment - industrial, town planning - proposals shelved - bayside, religion, arts and entertainment, livestock, sandridge lagoon, migrants, built environment - public housing, centenary bridge, local government - city of port melbourne, royal visits and occasions, police, sport - australian rules football, societies clubs unions and other organisations, natural environment, business and traders, war - world war ii, deaths and funerals, flood, domestic life, gasworks, health - general health, excelsior hall, public action campaigns, ada mary a'beckett kindergarten, wendy morris, pat grainger, g borer & co, johnny allsorts pawnbroker, mckenzies milkbar, galatos chocolates, j e earl pty ltd, faram brothers hardware, jack porritt, liardet family, porritts boot shop, vintage port worth preserving project, phyllis anderson, norman barry, david beazley, leonard george 'dugga' beazley, florence beazley, george beazley, brenda bedford, lettie bradley nee walsh, margaret bride nee polson, anne callaghan, beris campbell, tony cannatelli, john carroll, john cass, margaret couch nee smith, brian couldrey, delva crawford nee rees, 'buffie' rees, joan curtis, elvir dragovic, james edward earl, linda edman, jessie edwards, lisa edwards, trevor emmett, judy faram, doug faram, george faram, richard faram, thomas faram, allen faram, a g warren, james murdock, margaret mclean, minnie mclean, m b muir, susie fox, william gleeson, sylvia gleeson, arnold goetz, lilian 'lil' goss nee johnson, gladys gott nee mccabe, stan gravias, george henry (harry) gray, len greaney, charles hall, bertha harvey nee carey, r graham carey, mac hatfield, f patricia (pat) hawkins, tippo hayes, tom hills, bradley hinge, lloyd holmes, norah howard nee mallet, voula hronakis, lorna johnson, diane keating nee bradley, alison kelly, june kirby, bob knell, tommy lahiff, nicole lalande, bill lane, kathleen lane nee moore, j s lang, ron laing, beverley lewis, andy libbis, peter libbis, emily lock, may lowe nee irving, wendy lowenstein, micael lucas, ted mccarthy, laura mcgill nee irving, vin mcnamara, elsie median nee mccabe, maree menzel, marie mills, marlene mitchell nee sharp, david moloney, ari pipilikas, ada polson nee bellion, les profitt, ted rohan, elizabeth saunders, vanessa savvaidis, prudence sheil, chutathip silpiphat, voula skourakis, flo stark, ted tobin, thelma todd, barbara villani, erica wilson, harry bocquet, nott street state school, port melbourne library, port melbourne temperance hall, swallow & ariell ltd, business and traders - hotels

In 1990 City Librarian Wendy MORRIS commissioned Pat GRAINGER to co-ordinate a State and Council funded oral history project, the final product of which was a book printed in time for the 1992 Port Melbourne Festival. Having been sold out for two years, it was reprinted with funds from the City of Port Phillip Cultural Development fund just in time to be launched at the 2002 Festival launch held at Beacon Cove on a Yarra Tram, 22 March 2002.2002 reprint of "They Can Carry Me Out" - Memories of Port Melbourne Blue, perfect-bound paperback book with white title and black line conversion of photo of fishing boats in the Lagoon. 96 pp, reprinted March 2002fishermans bend, education - primary schools, piers and wharves - station pier, piers and wharves - waterside workers, education - kindergartens, celebrations fetes and exhibitions, transport - aviation and aerodrome, transport - ferries, transport - shipping, garden city, mission to seafarers, transport - railways, transport - horse, built environment - civic, built environment - domestic, built environment - commercial, built environment - industrial, town planning - proposals shelved - bayside, religion, arts and entertainment, livestock, sandridge lagoon, migrants, built environment - public housing, centenary bridge, local government - city of port melbourne, royal visits and occasions, police, sport - australian rules football, societies clubs unions and other organisations, natural environment, business and traders, war - world war ii, deaths and funerals, flood, domestic life, gasworks, health - general health, excelsior hall, public action campaigns, ada mary a'beckett kindergarten, wendy morris, pat grainger, g borer & co, johnny allsorts pawnbroker, mckenzies milkbar, galatos chocolates, j e earl pty ltd, faram brothers hardware, jack porritt, liardet family, porritts boot shop, vintage port worth preserving project, phyllis anderson, norman barry, david beazley, leonard george 'dugga' beazley, florence beazley, george beazley, brenda bedford, lettie bradley nee walsh, margaret bride nee polson, anne callaghan, beris campbell, tony cannatelli, john carroll, john cass, margaret couch nee smith, brian couldrey, delva crawford nee rees, 'buffie' rees, joan curtis, elvir dragovic, james edward earl, linda edman, jessie edwards, lisa edwards, trevor emmett, judy faram, doug faram, george faram, richard faram, thomas faram, allen faram, a g warren, james murdock, margaret mclean, minnie mclean, m b muir, susie fox, william gleeson, sylvia gleeson, arnold goetz, lilian 'lil' goss nee johnson, gladys gott nee mccabe, stan gravias, george henry (harry) gray, len greaney, charles hall, bertha harvey nee carey, r graham carey, mac hatfield, f patricia (pat) hawkins, tippo hayes, tom hills, bradley hinge, lloyd holmes, norah howard nee mallet, voula hronakis, lorna johnson, diane keating nee bradley, alison kelly, june kirby, bob knell, tommy lahiff, nicole lalande, bill lane, kathleen lane nee moore, j s lang, ron laing, beverley lewis, andy libbis, peter libbis, emily lock, may lowe nee irving, wendy lowenstein, micael lucas, ted mccarthy, laura mcgill nee irving, vin mcnamara, elsie median nee mccabe, maree menzel, marie mills, marlene mitchell nee sharp, david moloney, ari pipilikas, ada polson nee bellion, les profitt, ted rohan, elizabeth saunders, vanessa savvaidis, prudence sheil, chutathip silpiphat, voula skourakis, flo stark, ted tobin, thelma todd, barbara villani, erica wilson, harry bocquet, nott street state school, port melbourne library, port melbourne temperance hall, swallow & ariell ltd, business and traders - hotels

Brown marbled notebook with wide blue paper binding, label handwritten in brown ink "Register of Common Lodging Houses and Noxious Trades". contains details of rooming houses 1864 to 1892 and noxious trades 1884 to 1889. Hester, Thomas & Sons, (marine store):HESTER, Thomas & Arthur (boiling down works):Arthur HESTER (boiling down works):Hester & Hart (boiling down works):J Kitchen & Sons, (soap and candleworks, bone mill, boiling down works):HANSON, H:Morris & Ludwig, (marine store):KERR, James:NETTLEBERG, P (tannery):GOTZ, Martin (fishcuring):BROWN, Capt. P. (fishcuring):SMITH John, (marine store):Apollo Co Ltd:QUINN, James (boiling down works):QUINN, Denis (boiling down works):MULCAHEY, James (marine store):SCOTT, John Brown (bone mill):KELLY, Thomas (tannery):ELWORTHY, James (piggery):KENNETT, Caleb Amos (boiling down works):Yills (?), Charles (glue factory):Cockbill & Mulling (bone mill, boiling down works):SEWARD, George (marine store):Australasia Sugar Refining Company:NJ Butcher & Co. (boiling down works):I Hill & Sons (fish curing)Ink inside front cover: 'Fee for Registration Ten shillings 18 Victo: No 8 Clause VIindustry - noxious, built environment - domestic, business and traders, built environment - commercial, thomas hester & sons, thomas hester, arthur hester, hester & hart, j kitchen & sons pty ltd, h hanson, morris & ludwig, james kerr, p nettleberg, martin gotz, p brown, john smith, apollo candle co, james quinn, denis quinn, james mulcahey, john brown scott, thomas kelly, james elworthy, caleb amos kennett, charles yills (?), cockbill & mulling, george seward, australasia sugar refining company, n j butcher & co, i hill & sons

Five black and white photographs of the interior of J Kitchen & Sons Pty Ltd factory, Port Melbourne. .01- Tankis, Pan Room .02 - machinery for making boxes .03 - Girls possibly making boxes .04 - girls at work benches, milling, Velvet Soap plodding and wrapping dept .05 - candle factory, candles on trolley and machineMax Jeppesen, commercial photographer, 65 Hardware St, Melbourneindustry - manufacturing, workers, j kitchen & sons pty ltd

Seven (7) items of miscellaneous paperwork relating to the City of Port Mebourne .01 - list of tenants .02 residences in industrial zones .03 reports from Senior Health Inspector 1970 .04 City Engineer's annual estimates 1969/70 .05 Annual reports lady Forster Kindergarten 1969/70 .06 Annual report Medical Offficer of Health 1969 .07 Resume of Miss Margaret Babington-Smith 1970 (social worker)local government - city of port melbourne, l r mills - senior health inspector, h b a'beckett, lady forster kindergarten, dr a f cooper - medical officer, m j babington-smith - social worker