US Space Cover Skylab 3 Photos Kohoutek KSC Kennedy Space Center FL 2/4/1974 | eBay
Con Stoitsis on Twitter: "On this day in 1973 Comet Kohoutek-Skylab became the first comet photographed from space. NASA picture. https://t.co/B7matE7tOT" / Twitter
Christmas 1973 on Skylab | Drew Ex Machina
File:Skylab brightness observations of Comet Kohoutek.png - Wikipedia
Skylab: The flown and unflown missions - RocketSTEM
Skylab | The Space Collective
File:Skylab astronauts talk to comet discoverer Kohoutek.jpg - Wikimedia Commons