Shock Troop

From Author Wars - https://authorwars.com/books/shock-troop-80364.html

Overview:

Unknown. The First World of If (Unknown, Richard Bolton, Quinn Publishing Company, Inc.; Kingston, NY, $0.50, 160 pages, digest, Anthology)
Unknown. If, October 1956 (Unknown, Richard Bolton, Quinn Publishing Company, Inc.; Buffalo, NY, $0.35, 124 pages, digest, MAGAZINE)
2019 . Shock Troop (2019, Richard Bolton, Project Gutenberg, $0.00, ebook, Chapter Book)
2019 . Astounding Galaxy of Future Ifs: Pulp Science Fiction, 1929-1963 (2019, Richard Bolton, Matt Pierard, $0.00, ebook, Anthology)
2020 . The 15th Science Fiction Megapack®: 70 Classic and Modern Science Fiction Tales (2020, Richard Bolton, Wildside Press, $0.99, ebook, Anthology)