Original IBM 7070 Data Processing System Reference Manual. Form: A22-7003-2 Edition: Major Revision, August 1960 Copyright: 1959 and 1960 Publisher: International Business Machines Corporation Printed in the U.S.A. Language: English Format: Softcover technical reference manual. This is a heavily annotated working copy with extensive blue-ink handwritten technical notes, underlining, arrows, corrections, and crossed-out printed passages. The exterior shows substantial age and use, including heavy edge and corner wear, fraying, and a crushed lower-right corner. Prior-owner name 'Julie Martin' on the front cover.