Zilles Printers was begun by Lewis Zilles in the early 1930s. It was in McKenzie Street Ballarat. His son Jeffrey also became a printer - letterpress, offset and screen printer. The business became Zilles Printers/Graphics and was in Armstrong Street and later Bell Street Ballarat. Booklet provides a number of questions, 46, with clear answers. Diagrams and photographs used to illustrate the area being discussed. The printer is made by Davidson Corporation of Brooklyn, New York.Twenty-four page booklet. Salmon coloured card cover with thick pages. Print, diagrams and photographs.Stamp of business on back cover - B J Ball Ltd, 401 Post Office Place, Melbourne.zilles printers, ballarat, manual, davidson duel-lith printer, questions and answers, davidson corporation, brooklyn new york