100 Greatest Sports Heroes, by Mac Davis, Grosset & Dunlap Publishers, 1954 and 1958
(page 45, with drawing of Frank in wrestling pose).
From Milo to Londos, by Nat Fleischer, mentioned throughout the book.
A Pictorial History of Wrestling, by Graeme Kent, Spring Books, 1968.
From Gotch to Gable: A History of Iowa Wrestling, by Mike Chapman, University of
Iowa Press (5 Photos of Gotch).
Gotch: World's Greatest Wrestler, by Mike Chapman (38 Photos of various wrestlers)
Gotch: An American Hero, an historical novel by Mike Chapman, Culture House books,
1999, 279 pages (4 photos of Frank, on the front and back cover).