Pseudonym For: Sinclair, Upton, 1878-1968
Also credited as Frederick Garrison, U.S.A.
Items with "Garrison, Frederick, Lieut." as Credited AuthorMark Mallory at West Point
19. Hal Maynard at West Point, or, The new member of the Seven Devils
20. "Scraps" Powers in Trouble; or, The Seven Devils and the Green Goods Man