Heavy loose-leaf binder, brown hardcover. The book contains optical prescriptions dating from the late 1950's to the late 1960's. The pages are indexed alphabetically. After the name of the patient a description of the lens prescribed. The binder can be locked and there is a key in the lock attached to the key a label: "J.S.R. Barker, Chemist and Kodak dealer, 65 Mestyn Street, Castlemaine. Optical Px book. Medicine urgent".On front cover in pen: No.269 April 1954 a list of names, in the middle printed in red "Conquest series, loose leaf binder and a picture of a knight on horseback. Norman Bros Pty ltd, 60 Elizabeth Street, Melbourne". On the first page a label with the words Optical Px book J.S.R Barker, M.P.S. Pharmaceutical Chemist, Phone 34, Castlemaine.medical, optician, prescriptions