Sam Loyd (English Wikipedia)

"Association Awards". Association for Games & Puzzles International. Archived from the original on June 23, 2021. Retrieved August 2, 2022.
"Home Page". Association of Game and Puzzle Collectors. Archived from the original on August 23, 2000. Retrieved August 2, 2022. Association of Game and Puzzle Collectors formerly American Game Collectors Association

archive.org

Loyd, Sam (1914). Cyclopedia of Puzzles. New York: Lamb Publishing Company. Retrieved December 14, 2017 – via Internet Archive.
Gardner, Martin (1959). "Chapter 9: Sam Loyd: America's Greatest Puzzlist". Mathematical puzzles & diversions. New York, N.Y.: Simon and Schuster. p. 84.

Costello, Matthew J. (September 16, 1996), The Greatest Puzzles of All Time, Courier Dover Publications, p. 45 (Sam Loyd and the Vanishing Puzzle), ISBN 978-0-486-29225-0
Townsend, Charles Barry (2003). The Curious Book of Mind-boggling Teasers, Tricks, Puzzles & Games. Sterling Publishing Company. ISBN 9781402702143.
Foshee, Gary (December 5, 2001). "The Eng Coin Vise". In Wolfe, David; Rodgers, Tom (eds.). Puzzlers' Tribute: A Feast for the Mind. CRC Press. ISBN 978-1-4398-6410-4.

White, Alain C. (1962) [Orig pub. 1913, Whitehead and Miller]. Sam Loyd and His Chess Problems. Dover Publications. p. 125. hdl:2027/hvd.hn4zf9. ISBN 0-486-20928-8. {{cite book}}: ISBN / Date incompatibility (help)

Juul, Jesper (June 8, 2010). "Tuesday Changes Everything (a Mathematical Puzzle)". The Ludologist. Retrieved August 2, 2022.

Foshee, Gary. Take-Apart - Lunatic Lock. Puzzle World by John Rausch. Retrieved August 2, 2022.

"Transparent Lock". Neil's Puzzle Building Blog. September 2, 2015. Retrieved August 2, 2022.

"RPO -- Henry Wadsworth Longfellow : Excelsior". rpo.library.utoronto.ca. Archived from the original on April 30, 2008. Retrieved August 9, 2022.

"Sam Loyd". World Chess Hall of Fame. Archived from the original on April 4, 2017.
"RPO -- Henry Wadsworth Longfellow : Excelsior". rpo.library.utoronto.ca. Archived from the original on April 30, 2008. Retrieved August 9, 2022.
"Association Awards". Association for Games & Puzzles International. Archived from the original on June 23, 2021. Retrieved August 2, 2022.
"Home Page". Association of Game and Puzzle Collectors. Archived from the original on August 23, 2000. Retrieved August 2, 2022. Association of Game and Puzzle Collectors formerly American Game Collectors Association

"Sam Loyd". World Chess Hall of Fame. Archived from the original on April 4, 2017.