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1 letter from Johnson written to Kennedy on April 28,1961

2 from a tape recording in the John Fitzgerald Kennedy Library

3 James Oberg, in Final Frontier, as reprinted in The New Book of Popular Science Annual, 1992

Space vehicle guidance using the gyroscopic compass

Celestial mechanics, calculating the trajectories for space travel

US space surveillance network tracks objects in space

An Unfinished Life: John F. Kennedy, 1917-1963, Robert Dallek (2003). ISBN 0-316-17238-3

Arrows to the Moon: Avro's Engineers and the Space Race , Chris Gainor (2001). ISBN 1-896522-83-1

Fallen Astronauts: Heroes Who Died Reaching for the Moon, Colin Burgess, Kate Doolan, Bert Vis (2003). ISBN 0-8032-6212-4

Light This Candle : The Life & Times of Alan Shepard--America's First Spaceman, Neal Thompson (2004). ISBN 0-609-61001-5

The New Columbia Encyclopedia, Col.Univ.Press (1975).

The Right Stuff, Tom Wolfe (pbk ed. 2001). ISBN 0-553-38135-0 ISBN 0-613-91667-0

Russia in Space: The Failed Frontier?, Brian Harvey (2001). ISBN 1-85233-203-4

The Soviet Space Race With Apollo, Asif A. Siddiqi (2003). ISBN 0-8130-2628-8

Soyuz: A Universal Spacecraft, Rex Hall, David J. Shayler (2003). ISBN 1-85233-657-9

Space for Women: A History of Women With the Right Stuff, Pamela Freni (2002). ISBN 1-931643-12-1

Space Exploration, Carole Scott, Eyewitness Books, 1997

Sputnik and the Soviet Space Challenge, Asif A. Siddiqi (2003). ISBN 0-8130-2627-X

Stages to Saturn: A Technological History of the Apollo/Saturn Launch Vehicles, Roger E. Bilstein (2003). ISBN 0-8130-2691-1

Yeager: An Autobiography, Chuck Yeager (1986). ISBN 0-553-25674-2

CORE/NSF  Arrows to the Moon synopsis

Artwork representing the cold war in space

Space Race Exhibition at the Smithsonian National Air and Space Museum

TheSpaceRace.com – Mercury, Gemini, and Apollo space programs

Timeline of the Space Race to the Moon 1960 - 1969

570Kb PDF file containing a scan of a letter from Wernher Von Braun to Vice President Johnson, dated 29 April 1961, responding to a memorandum from President Kennedy to Johnson. Von Braun provides a personal assessment (rather than an official view in his then-capacity as director of NASA's Marshall Space Flight Center) of United States and Soviet capability. The analysis includes the opinion that the U.S. has "an excellent chance" of beating the Russians to a manned lunar landing, adding "with an all-out crash program I think we could accomplish this objective in 1967/68."

Communications Satellites article by NASA

Why Did the USSR Lose the Moon Race? Pravda Online, 2002-12-03

Shadows of the Soviet Space Age, Paul Lucas