Three items signed by one or more members of the Skylab 4 mission: an ECS MON ‘que card’ used in training for the Skylab 4 mission, 6.25 x 5.5, dated March 26, 1973, signed in blue ink, “Ed Gibson, Skylab III”; a printed invitation card for the launch of the Skylab 4 mission, 4.5 x 6, signed in black felt by the full crew of Jerry Carr, Ed Gibson, and Bill Pogue, with each signing first name only; and a color glossy 5.5 x 8.5 biography photo of Gibson in his white space suit, signed in black felt tip by Gibson. In overall fine condition.
Accompanied by a signed certificate of authenticity from Gibson for the ECS MON Que Card, which reads: “Environmental Control System Monitor parameters and their acceptable values are first listed. These parameters include: space suit pressure, oxygen flow, hydrogen pressure, tank pressure, oxygen pressure, primary over secondary input, primary, secondary and evaporator out, steam and discharge out, compression, accumulator and water quantities, temperature and pressure. Additional values are specified for: Main Bus A and B, AC1 and 2, cabin pressure increase and decrease and oxygen flow high.”
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