Original unbound simulation manual entitled “LM–3, Procedures Malfunction,” February 24, 1969, 8.5 x 11, approximately 85 sheets, most double-sided, containing 11 different chapter tabs, with each chapter detailing various symptoms, step-by-step procedures, and remarks concerning seemingly every type of possible interference or disruption to the lunar module. The front cover has notations in an unknown hand along the top and bottom, reading, “LMS Copy, Do Not Remove.” Manual is held together by three binder rings. In fine condition, with toning to edges and expected wear from use (heaviest to back cover); manual pages remain exceptionally clean and crisp.