Project Gemini (English Wikipedia)

Agle (1998). Agle, D.C. (September 1998). "Flying the Gusmobile". Air and Space Magazine. 12 (4). Washington, D.C.: Smithsonian Institution. Retrieved 2015-01-03.
Betancourt, Mark (October–November 2018). "Abort!". Air & Space/Smithsonian. Vol. 33, no. 5. p. 39. Retrieved March 16, 2019.

americanspacecraft.com (Global: low place; English: low place)

"Unflown Gemini 3A (2411) spacecraft". A Field Guide to American Spacecraft. 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft | Gemini MOL-B". 2019-03-14. Archived from the original on 2019-03-14. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-10. Archived from the original on 2019-04-10. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-10. Archived from the original on 2019-04-10. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft | Gemini Index". 2019-03-28. Archived from the original on 2019-03-28. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-03-22. Archived from the original on 2019-03-22. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-03-29. Archived from the original on 2019-03-29. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-10. Archived from the original on 2019-04-10. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-01. Archived from the original on 2019-04-01. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"Gemini boilerplace at U.S. Air Force Space Museum". A Field Guide to American Spacecraft. 2019-04-10. Archived from the original on 2019-04-10. Retrieved 2023-09-20.
"Gemini Ingress-Egress Trainer". A Field Guide to American Spacecraft. 2019-03-20. Archived from the original on 2019-03-20. Retrieved 2023-09-20.
"MSC-307 Gemini Boilerplate". A Field Guide to American Spacecraft. September 3, 2007. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"Gemini Spacecraft artifact index". A Field Guide to American Spacecraft. 2019-03-28. Archived from the original on 2019-03-28. Retrieved 2023-09-20.

archive.org (Global: 6^th place; English: 6^th place)

Gainor (2001), pp. 93, 97–99. Gainor, Chris (2001). Arrows to the Moon: Avro's Engineers and the Space Race. Burlington, Ontario: Apogee Books. ISBN 978-1-896522-83-8.
Wilford, John Noble (July 1969). We Reach the Moon. New York: Bantam Books. p. 67.

astronautix.com (Global: 1,562^nd place; English: 1,346^th place)

Wade, Mark. "By Gemini to Mars!". astronautix.com. Retrieved January 2, 2026.

buzzaldrin.com (Global: low place; English: low place)

Buzz Aldrin (Fall 2005). "Orbital Rendezvous". Buzz Aldrin's Share Space Foundation. Retrieved 2011-10-09.

drewexmachina.com (Global: low place; English: low place)

LePage, Andrew (November 3, 2016). "The USAF Manned Orbiting Laboratory Test Flight". drewexmachina.com. Retrieved January 2, 2026.

ed-thelen.org (Global: low place; English: 9,943^rd place)

C. A. Leist and J. C. Condell, "Gemini Programming Manual", 1966

hathitrust.org (Global: 296^th place; English: 153^rd place)

babel.hathitrust.org

Swanson, Glen E., ed. (1999). Before This Decade Is Out: Personal Reflections on the Apollo Program (Report). NASA. p. 354. Retrieved January 2, 2026.

heroicrelics.org (Global: low place; English: low place)

"St. Louis Science Center". heroicrelics.org. Retrieved 2023-05-25.
"U.S. Space and Rocket Center". heroicrelics.org. Retrieved 2023-05-25.

ibiblio.org (Global: 1,093^rd place; English: 690^th place)

Burkey (2012). Burkey, Ronald (2012-01-08). "Gemini Spacecraft On-Board Computer (OBC)". Archived from the original on 2014-12-15. Retrieved 2015-01-04.

ibm.com (Global: 1,369^th place; English: 968^th place)

www-03.ibm.com

"IBM Archives: IBM and the Gemini Program". 23 January 2003. Archived from the original on January 19, 2005.

measuringworth.com (Global: 3,470^th place; English: 1,768^th place)

Johnston, Louis; Williamson, Samuel H. (2023). "What Was the U.S. GDP Then?". MeasuringWorth. Retrieved November 30, 2023. United States Gross Domestic Product deflator figures follow the MeasuringWorth series.

nasa.gov (Global: 12^th place; English: 73^rd place)

history.nasa.gov

Armstrong had left the US Navy and was already a NASA test pilot when he and Elliot See became the first civilian astronauts in Astronaut Group 2; see Armstrong's NASA biography and a description of his receiving a NASA award, among others.
Tomayko (1988), pp. 10–19. Tomayko, James E. (1988). "The Gemini Digital Computer: First Machine in Orbit". Computers in Spaceflight: The NASA Experience. Washington, D.C.: National Aeronautics and Space Administration. Retrieved 2015-01-04.
"NASA, Project Gemini". NASA. Archived from the original on 2004-11-07. Retrieved 2011-10-14.

ntrs.nasa.gov

Hacker & Grimwood (1977), pp. XV, 75. Hacker, Barton C.; Grimwood, James M. (1977). On the Shoulders of Titans: A History of Project Gemini (PDF). NASA SP-4203. Washington, D.C.: National Aeronautics and Space Administration. Retrieved 2015-01-02.
Hacker & Grimwood (1977), p. 75. Hacker, Barton C.; Grimwood, James M. (1977). On the Shoulders of Titans: A History of Project Gemini (PDF). NASA SP-4203. Washington, D.C.: National Aeronautics and Space Administration. Retrieved 2015-01-02.
Ruy, Jr., Hilary A.; Burns, Frederick T. (June 1967). Development and Qualification of Gemini Escape System (PDF) (Report). NASA Manned Spaceflight Center. Retrieved January 2, 2026.

nasa.gov

Armstrong had left the US Navy and was already a NASA test pilot when he and Elliot See became the first civilian astronauts in Astronaut Group 2; see Armstrong's NASA biography and a description of his receiving a NASA award, among others.
Loff (2013). Loff, Sarah (2013-10-21). "Gemini: Stepping Stone to the Moon". Gemini: Bridge to the Moon. Washington, D.C.: National Aeronautics and Space Administration. Archived from the original on 2014-12-21. Retrieved 2015-01-04.

historycollection.jsc.nasa.gov

Vantine, William (October 15, 1997). "Thomas P. Stafford Oral History". Johnson Space Center Oral History Project. NASA. Retrieved March 16, 2019.

science.ksc.nasa.gov

Dumoulin, Jim (August 25, 2000), NASA Project Gemini-XI, archived from the original on September 18, 2018, retrieved April 12, 2010

nationalgeographic.com (Global: 489^th place; English: 425^th place)

ngm-beta.nationalgeographic.com

Dryden (1964), p. 362. Dryden, Hugh (March 1964). "Footprints on the Moon". National Geographic Magazine. 125 (3). Washington, D.C.: National Geographic Society: 357–401. Retrieved 2015-01-04.^{[dead link]}

newspapers.com (Global: 24^th place; English: 12^th place)

Reguly (1965), p. 7. Reguly, Robert (September 3, 1965). "Canadians who helped Gemini 'Go'". Toronto Daily Star. Toronto. p. 7 – via newspapers.com.
"NASA Mum on 'Jingling'". Palm Beach Post. December 17, 1965 – via newspapers.com.

nytimes.com (Global: 7^th place; English: 7^th place)

Schwartz, John (October 17, 2018). "Why Does 'First Man' Say Gemini as 'Geminee'? NASA Explains. Sorta". The New York Times. Retrieved November 6, 2018.

si.edu (Global: 256^th place; English: 197^th place)

airandspace.si.edu

"Capsule, Gemini IV". National Air and Space Museum. Retrieved January 2, 2026.
"Target Adapter, Agena". Smithsonian Air and Space Museum. Archived from the original on September 19, 2018.

spaceaholic.com (Global: low place; English: low place)

Rocket Motor, TE-M-385, Solid Propellant, Gemini Spacecraft Retro.

springmillstatepark.com (Global: low place; English: low place)

"Gus Grissom Memorial at Spring Mill State Park". springmillstatepark.com. Retrieved January 2, 2026.

tcm.com (Global: 422^nd place; English: 232^nd place)

Stafford, Jeff (July 19, 2006). "Countdown". Turner Classic Movies. Retrieved January 2, 2026.

thespacereview.com (Global: 9,241^st place; English: 6,512^th place)

Lafleur, Claude (2010-03-08). "Costs of US piloted programs". The Space Review. Retrieved February 18, 2012.
Dwayne Day (December 7, 2015). "The Big G". The Space Review. Retrieved March 20, 2023.

thetexasairmuseum.org (Global: low place; English: low place)

"Exhibits – Texas Air Museum".

vintagespace.wordpress.com (Global: low place; English: low place)

"Losing Rogallo from Gemini". Vintage Space. Amy Shira Teitel. 2011-05-22. Retrieved 2012-12-23.

web.archive.org (Global: 1^st place; English: 1^st place)

Loff (2013). Loff, Sarah (2013-10-21). "Gemini: Stepping Stone to the Moon". Gemini: Bridge to the Moon. Washington, D.C.: National Aeronautics and Space Administration. Archived from the original on 2014-12-21. Retrieved 2015-01-04.
Burkey (2012). Burkey, Ronald (2012-01-08). "Gemini Spacecraft On-Board Computer (OBC)". Archived from the original on 2014-12-15. Retrieved 2015-01-04.
"IBM Archives: IBM and the Gemini Program". 23 January 2003. Archived from the original on January 19, 2005.
"NASA, Project Gemini". NASA. Archived from the original on 2004-11-07. Retrieved 2011-10-14.
Dumoulin, Jim (August 25, 2000), NASA Project Gemini-XI, archived from the original on September 18, 2018, retrieved April 12, 2010
USAF (2017). "Gemini Capsule". Air Force Space and Missile Museum. Archived from the original on 2017-02-15. Retrieved 2017-12-31.
"Unflown Gemini 3A (2411) spacecraft". A Field Guide to American Spacecraft. 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft | Gemini MOL-B". 2019-03-14. Archived from the original on 2019-03-14. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-10. Archived from the original on 2019-04-10. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-10. Archived from the original on 2019-04-10. Retrieved 2023-09-20.
"Target Adapter, Agena". Smithsonian Air and Space Museum. Archived from the original on September 19, 2018.
"A Field Guide to American Spacecraft | Gemini Index". 2019-03-28. Archived from the original on 2019-03-28. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-03-22. Archived from the original on 2019-03-22. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-03-29. Archived from the original on 2019-03-29. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-10. Archived from the original on 2019-04-10. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-01. Archived from the original on 2019-04-01. Retrieved 2023-09-20.
"A Field Guide to American Spacecraft". 2019-04-08. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"Gemini boilerplace at U.S. Air Force Space Museum". A Field Guide to American Spacecraft. 2019-04-10. Archived from the original on 2019-04-10. Retrieved 2023-09-20.
"Gemini Ingress-Egress Trainer". A Field Guide to American Spacecraft. 2019-03-20. Archived from the original on 2019-03-20. Retrieved 2023-09-20.
"MSC-307 Gemini Boilerplate". A Field Guide to American Spacecraft. September 3, 2007. Archived from the original on 2019-04-08. Retrieved 2023-09-20.
"Gemini Spacecraft artifact index". A Field Guide to American Spacecraft. 2019-03-28. Archived from the original on 2019-03-28. Retrieved 2023-09-20.

youtube.com (Global: 13^th place; English: 14^th place)

The Song from Outer Space on YouTube

Project Gemini (English Wikipedia)

afspacemuseum.org (Global: low place; English: low place)

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heroicrelics.org (Global: low place; English: low place)

ibiblio.org (Global: 1,093rd place; English: 690th place)

ibm.com (Global: 1,369th place; English: 968th place)

www-03.ibm.com

measuringworth.com (Global: 3,470th place; English: 1,768th place)

nasa.gov (Global: 12th place; English: 73rd place)

history.nasa.gov

ntrs.nasa.gov

nasa.gov

historycollection.jsc.nasa.gov

science.ksc.nasa.gov

nationalgeographic.com (Global: 489th place; English: 425th place)

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spaceaholic.com (Global: low place; English: low place)

springmillstatepark.com (Global: low place; English: low place)

tcm.com (Global: 422nd place; English: 232nd place)

thespacereview.com (Global: 9,241st place; English: 6,512th place)

thetexasairmuseum.org (Global: low place; English: low place)

vintagespace.wordpress.com (Global: low place; English: low place)

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astronautix.com (Global: 1,562^nd place; English: 1,346^th place)

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hathitrust.org (Global: 296^th place; English: 153^rd place)

ibiblio.org (Global: 1,093^rd place; English: 690^th place)

ibm.com (Global: 1,369^th place; English: 968^th place)

measuringworth.com (Global: 3,470^th place; English: 1,768^th place)

nasa.gov (Global: 12^th place; English: 73^rd place)

nationalgeographic.com (Global: 489^th place; English: 425^th place)

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si.edu (Global: 256^th place; English: 197^th place)

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thespacereview.com (Global: 9,241^st place; English: 6,512^th place)

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