Skylab 4 crew returns home, February 8, 1974 - EDN
The story of the Skylab space station - BBC Sky at Night Magazine
The Space Review: Astronauts and Area 51: the Skylab Incident
1974 SKYLAB,Photo,Photograph,Manned Space Laboratory,Space,Romania,3241,TAB2,FDC | eBay
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Skylab 4 Original 'Type 1' Photograph | RR Auction
From the Archives, 1979: They're off and racing in the Skylab stakes
Area-51's ultra-top secret cover was almost blown by one photograph | Daily Mail Online
1974 SKYLAB,Photo/Photograph,Manned Space Laboratory,Space,Romania,3241,TAB2,MNH | eBay
Ed Gibson's Dances With The Sun: Skylab 4, 1973 – 1974 - National Space Society
Skylab Stamp Usa 1974 Stock Photo - Download Image Now - Skylab Space Station, Science, 1974 - iStock
The Space Review: Not-so ancient astronauts and Area 51: the Skylab Incident
Skylab Space Station, 1974 Stock Photo - Alamy
View of Skylab space station cluster in Earth orbit from CSM - PICRYL - Public Domain Media Search Engine Public Domain Search
The story of the Skylab space station - BBC Sky at Night Magazine
Skylab 1 space station in orbit. - Stock Image - S440/0056 - Science Photo Library
171 Planet Earth 1974 Stock Photos, High-Res Pictures, and Images - Getty Images
45 Skylab 4 Stock Photos, High-Res Pictures, and Images - Getty Images
Perhaps the most intriguing photo purporting to show the North Polar opening into the “Hollow Earth”, taken by the American s… | Hollow earth, American space, Earth
Skylab: NASA Commemorates 40th Anniversary of America's First Space Station - Photo Gallery/Broadcast - Universe Today
The Space Review: Not-so ancient astronauts and Area 51: the Skylab Incident
Skylab space station in Earth orbit from C.S.M (February 12, 1974 Stock Photo - Alamy
The American space station "Skylab", which was used for research purposes between 1973 and 1974, at a 460 km altitude above Earth. Undated photo, probably from the 1980s Stock Photo - Alamy
File:Skylab 4 Earth View of Island of Kyushu, Japan from Skylab.jpg - Wikimedia Commons
NASA Marshall's Skylab Reuse Study (1977) | WIRED
Image of SKYLAB: SPLASHDOWN, 1974 The Skylab 4 Command Module in the
Space History Photo: Carr and Pogue in Skylab | Space
