Project Skylab
- Offers a detailed history of the Skylab program, including the goals of the program and the achievements of the three manned flights to Skylab. Has an imagery collection and links to sites outlining Skylab's contributions to various scientific fields.
- http://www-pao.ksc.nasa.gov/history/skylab/skylab.htm

Encyclopedia Astronautica: Skylab
- An annotated chronology of the missions.
- http://www.astronautix.com/project/skylab.htm

Apollo Telescope Mount
- Technical information and mission patches from the Naval Research Laboratory.
- http://wwwsolar.nrl.navy.mil/skylab_atm.html

Skylab
- Spacecraft and mission profile from the National Space Science Data Center.
- http://nssdc.gsfc.nasa.gov/nmc/tmp/1973-027A.html

Skylab: A Chronology
- The NASA History Office presents an online version of this authoritative book.
- http://history.nasa.gov/SP-4011/cover.htm