The Viking Mission
- An illustrated report of the Viking missions and experiments.
- http://www.nasm.si.edu/research/ceps/etp/mars/viking.html

Viking 2 Orbiter
- Spacecraft and mission profile from the National Space Science Data Center.
- http://nssdc.gsfc.nasa.gov/nmc/tmp/1975-083A.html

Viking 1 Lander
- Spacecraft and mission profile from the National Space Science Data Center.
- http://nssdc.gsfc.nasa.gov/nmc/tmp/1975-075C.html

Viking 2 Lander
- Spacecraft and mission profile from the National Space Science Data Center.
- http://nssdc.gsfc.nasa.gov/nmc/tmp/1975-083C.html

Viking 1 Orbiter
- Spacecraft and mission profile from the National Space Science Data Center.
- http://nssdc.gsfc.nasa.gov/nmc/tmp/1975-075A.html

Viking
- Mission descriptions, fact sheet, and images.
- http://www.solarviews.com/eng/viking.htm

Viking Project Information
- Mission overview and related links.
- http://nssdc.gsfc.nasa.gov/planetary/viking.html