Space Today Online: Voyager - Presents an overview of the project, mission timeline, and relevant links. - http://www.spacetoday.org/SolSys/Voyagers20years.html
Wikipedia: Voyager program - Offers an overview of the program and mission details for Voyager 1 and Voyager 2. - http://en.wikipedia.org/wiki/Voyager_program
Voyager Project - Detailed information on NASA missions to the outer planets and the first spacecraft to reach Uranus and Neptune. - http://voyager.jpl.nasa.gov/
Voyager Project Information - Information about Voyager and Voyager data archived at the National Space Science Data Center. - http://nssdc.gsfc.nasa.gov/planetary/voyager.html