“Defying Gravity: The Untold Secrets Behind the Space Jetpack Revolution”

Suited for Spacewalking: a Teacher’s Guide With Activities for Technology Education, Mathematics, and Science, NASA, https://books.google.ca/books?id=nv4w6IuEbNMC&pg=PA34&redir_esc=y#v=onepage&q&f=false

Uri, John, 40 years Ago: STS-41B, the First Flight of the Manned Maneuvering Unit, NASA, February 6, 2024, https://www.nasa.gov/history/40-years-ago-sts-41b-the-first-flight-of-the-manned-maneuvering-unit/

Evans, Ben, “Buck and Flash”: Remembering the First Flights of the Manned Maneuvering Unit (MMU), Forty Years On, AmericaSpace, https://www.americaspace.com/2024/02/03/buck-and-flash-remembering-the-first-flights-of-the-manned-maneuvering-unit-mmu-forty-years-on/

Norman, Scott, Untethered in Space: Bruce McCandless and the Manned Maneuvering Unit, Coca Cola Space Science Centre, June 9, 2020, https://www.ccssc.org/mmu/

SPK, Encyclopedia Astronautica, http://www.astronautix.com/s/spk.html

Unusual Marquardt “Space Sled”, Aerospace Projects Review Blog, https://www.aerospaceprojectsreview.com/blog/?p=2983

1954 – “Bottle Suit” – Wernher von Braun / Disney (American), Cybernetic Zoo, August 31, 2014, https://cyberneticzoo.com/teleoperators/1954-bottle-suit-wernher-von-braun-walt-disney-american/

Chaikin, Andrew, The Story of NASA’s Jet-Propulsion Backpack, Smithsonian Magazine, April 2014, https://www.smithsonianmag.com/science-nature/story-nasas-jet-propulsion-backpack-180950190/

Gemini 9, Encyclopedia Astronautica, http://www.astronautix.com/g/gemini9.html