Secret of the Cyclotron

From Author Wars - https://authorwars.com/books/secret-of-the-cyclotron-87642.html

Overview:

Title: Secret of the Cyclotron
Author: Jackson Gregory, Jr.
Year: 1940
Type: Short Fiction

Editions/Publications:

Unknown. Thrilling Wonder Stories, February 1940 (Unknown, Jackson Gregory, Jr., Better Publications, Inc., $0.15, 132 pages, pulp, MAGAZINE)
Unknown. Thrilling Wonder Stories, February 1940 (Unknown, Jackson Gregory, Jr., Pulp Tales Press, $19.95, 130 pages, Trade Paperback, Anthology)