This exercise book was owned by Audrey Sack and was donated by David Sack at the same time as a typewriter in its case plus accessories (refer to RN 3087). It has hand written notes of Commercial Principles class lessons from Warrnambool High School, written by Audrey Sack including pages dated 1938 and 1939. Audrey was the daughter of William Sack, owner of the business Sacks Jewellers at 115 Liebig Street, Warrnambool. William commenced trading in the early 1900’s; and the typewriter was used by Audrey in the business from the late 1930’s through to about 1996 when the business was sold. William and his wife June had three children, Eric, Audrey and David. The children were owners/partners of Sack’s Jewellers after William’s passing in 1976. Eric and David were ‘owners of the business’, with Audrey carrying out much of the clerical work. Eric died in about 1984 and David sold the practise in 1996. During the 65 years of business the typewriter was used for all the normal applications of a jeweller’s; preparing invoices, guarantees, taxation records. But in addition the four members of the Sack family were very involved in Church activities, particularly in lay administration and lay preaching in the Baptist Church, and the typewriter gained a lot of after-hours use. The family actively supported overseas Missions in India, SE Asia, and Africa. After the sale of the business in 1996, Audrey took the typewriter home for her community activities (David got a computer). In the 1980’s David volunteered as the Clock Repairer at Flagstaff Hill for the historical instruments. In the early days this took some long hours to get the clocks working, but in recent years he has just been ‘on call’ if needed. He is an alert 85 year old and just in the last 12 months has given up a busy schedule of Sunday Lay Preaching around the district. (2015)The exercise book is associated with a typewriter and text book, which is of local significance, being previously owned and used in a local business established for about 100 years.Book, student's exercise book with brown paper cover over soft cover. White pages have printed blue lines. Notes written in script with nib pen. Correction marks are on some pages. The book has entries from front to just past the centre pages, the turned upside down and written from back to almost centre pages. It belong to Autrey Sack, who was a Commercial Practices student at Warrnambool High School. Handwritten ink pen inscriptions are on the front cover and within the book. Notes are dated as 1938 and 1939."Commercial Principles" "Audrey Sack /. Commercial / W.H.S."flagstaff hill, warrnambool, flagstaff hill maritime museum, maritime museum, shipwreck coast, flagstaff hill maritime village, great ocean road, commercial principles, warrnambool high school, sack’s jewellers warrnambool, william sack, david sack, audrey sack, sack’s jewellers, exercise book, student notes, business education

The Strowger switch is the first commercially successful electro-mechanical stepping switch telephone exchange system. It was developed by the Strowger Automatic Telephone Exchange Company founded in 1891 by Almon Brown Strowger. In 1912 Australia's first automatic telephone exchange was installed at Geelong. Victoria. The exchange equipment was Strowger Automatic telephone apparatus, manufactured by the Automatic Electric Company, Chicago USA. This is a useful research tool for the history of telephony.A 96 pp bound book with a dark brown cover. On the front cover inside a narrow black ruled frame is the title, "Principles of Automatic Telephony Circuits and Trunking" Below that is the logo for the Strowger Automatic telephone manufactured by the Automatic Electric company, Chicago.telephony communication manual-automatic-telephony