Official ring-bound NASA checklist entitled "Apollo CSM 104, Flight Crew Abbreviated Checklist," used by Russell A. Larson of MIT's Charles Stark Draper Laboratory, prepared by the Manned Spacecraft Center's Spacecraft Systems Branch, 6 x 8, February 1, 1969, stamped as "Received" and marked on the front cover in felt tip, "Russ Larson, #9, Launch 3-3-69." The abbreviated checklist is divided into sections for "Launch Operations," "CMP Checklist," "LMP Checklist," and "Entry Operations." The checklist has copious contemporary pencil and felt tip annotations throughout. In very good to fine condition, with some edge toning and staining to covers, and general wear from use. Russ Larson worked as a program engineer and astronaut liaison at MIT's Instrumentation Lab, where he was involved in programming the Lunar Module's Apollo Guidance Computer; he worked directly with the astronaut crews, training them on the simulators and guidance system.