Companion site to the PBS film. Mars missions, interactive speed timeline, and a look at where space exploration is taking us. http://www.pbs.org/milkyway/
A translation of Hermann Noordung's 1929 "Das Problem der Befahrung des Weltraums", this book is one of most extensive early studies of the technical and engineering details of a space station. Part of the NASA history series. http://www.hq.nasa.gov/office/pao/History/SP-4026/cover.html
Information on the Mercury, Gemini, and Apollo, and Soviet space programs, astronauts, and rockets. Includes a glossary and discussion board. http://www.thespacerace.com/
How to get a Boy Scout Space Exploration Merit Badge. Includes a brief summary of early space travel and a timeline of events in space exploration from the 1950s. http://my.execpc.com/~culp/space/space.html
Offers history of Australia's activities in rocket and missile testing at the Woomera Range. Includes personal memories of many ex-residents. http://homepage.powerup.com.au/~woomera/
Source for space history and artifacts; features a worldwide appearance of astronaut appearances and original news articles http://www.collectspace.com/