The Sidcup Collection came to RACS from the University of Melbourne, Pathology Department and is regarded as one of the most valuable held by the College. It includes the patient records created by the Australian Surgical Unit at the hospital and covers the period 1916 - 1919. There are 50 watercolour illustrations of patients sketched by Sgt. Daryl Lindsay, X-ray prints, photographs, diagrams and some case histories. Private Pritchard was treated by the Australian Surgical Unit during WW1.These casts are unique in Victoria An original plaster cast taken of a patient Private Pritchard, who required reconstructive surgery c1917-1921. The cast would have been used as an aid to surgery and used for future reference.On base,incised into plaster "PRITCHARD" .sidcup collection, university of melbourne, sir daryl lindsay, 1916-1919, plaster cast, plastic surgery, sir benjamin rank