Mars Global Surveyor: NASA's official site. Detailed mission information, news reports, and a database of images from the satellite's orbits of Mars.
Mars Global Surveyor: Mission description and profile.
Mars Global Surveyor: Spacecraft and mission profile from the National Space Science Data Center.
Mars Global Surveyor Thermal Emission Spectrometer: Spectrometer information and almost-live weather maps of the Martian poles.
Mars Orbiter Camera Images: A Martian atlas made from Global Surveyor mapping data, from NASA's Planetary Data System.
Mars Orbiter Camera Images: Current and archived pictures from Malin Space Science Systems.
Mars Unearthed: Several images and animations created from the Mars Global Surveyor's Orbital Camera
MarsNews.com: Mars Global Surveyor: Mission overview, quick facts, and extensive links to related news stories.
Universe Today: Mars Global Surveyor: A selection of news reports on the mission.