Set of 2 Skylab 2 “SL-3” envelopes (Garriott, Lousma, Bean). - Lot 259

Set of 2 Skylab 2 “SL-3” envelopes (Garriott, Lousma, Bean). The first is stamped and postmarked on the day of launch (July 28, 1973) and bears serial number 000009. 9 x 16.5 cm. The second envelope is from the Skylab SL-4 mission, stamped and postmarked on the day of the 7-hour spacewalk by astronauts Carr and Pogue, December 25, 1973. 9 x 16.5 cm. SKYLAB MISSIONS - Skylab, the first U.S. orbital station, launched on May 14, 1973, as Skylab 1-SL-1. It disintegrated on July 11, 1979. Skylab 2 SL-2: First crewed flight on May 25, 1973, with Pete Conrad, Joseph Kerwin, and Paul Weitz; they installed a makeshift sunshade made of Mylar and nylon (thermal insulation) and freed the undeployed solar panel. 28-day mission. Skylab 3 SL-3: Second crew; launched on July 28, 1973; returned on September 25, 1973. Alan Bean, Owen Garriott, and Jack Lousma (with the spiders Anita and Arabella). 59-day mission. Skylab 4 SL-4: 3rd crew: launched on November 16, 1973; returned on February 8, 1974. Gerald Carr, Edward Gibson, and William Pogue. Went on strike after 7 weeks to demand a day off. 84-day mission.