Scope and ContentProvisional Operator's Instruction Manual. MICRO-MASTER 35mm Camera 52 2020. Keuffel & Esser Co., Hoboken, New Jersey. Copyright 1964. Plastic comb binding, 8-1/2" x 11" high, 57 pages; 11 illustrations; numerous foldouts. A microfilming camera system sold by K&E. With: MICRO-MASTER 35mm Camera Service Manual for 52 2020 (and accessories.) Copyright 1983, Keuffel & Esser Co.; A Kratos Company. Plastic comb binding, 8-1/2" x 11", irregular pagination, ca. 75 leaves, numerous diagrams and foldouts. The company had not been located in Hoboken since 1968 (it was in Morristown.)