NASA
Nasa: Sputniks 1, 2, and 3
NASA provides a paper that "deals with the politics, planning and technology of the period 1946-1958" in the Sputnik program.
NASA
Nasa: The International Geophysical Year
This site from NASA outlines the Sputnik program and the political underworkings that allowed it to reach fruition.
NASA
Nasa: "Pravda" Press Release
NASA provides the full text from the tersely worded "Pravda," the Russian national newspaper, that announced the successful launch of Sputnik.
NASA
Nasa: Salyut 4
Overview of the Salyut 4 space station mission and instrumentation. Has a great picture of the computer rendering of the space station.
Other
Iki: Russian Space Research Institute
The official site for the "leading organization of the Russian Academy of Sciences in the field of investigations of Outer Space, Solar System planets and other objects of the Universe"
NASA
Nasa: Sputnik and the Dawn of the Space Age
This site from NASA describes the impact that Sputnik had in triggering the space race.
NASA
Nasa: Sputnik and the Origins of the Space Age
NASA provides a paper providing a background to the Sputnik launch and the U.S. response.
NASA
Nasa: Pre and Post Sputnik Public Attitudes
This site from NASA provides a paper that describes the public's attitiude before and after the launch of the Sputnik satellite. Originally presented as part of the "U.S. President's Committee on Information Activities Abroad."
NASA
Nasa: Sputnik Pictures
NASA provides pictures of various Sputnik program satellites, including Sputnik 1. Also has pictures of key officials involved in the Sputnik program.
Other
Soviet Space Photos: Photos of Voskhod 3
Actual photos of the Voskhod 3, viewable as larger versions upon clicking the thumbnail.