The on-sale date is from the publication date recorded in the Catalog of Copyright Entries, Part 2, Periodicals, 1941, New Series, Vol. 36, No. 4. Printed in the U. S. A. is a footer note on the last story page.
Dick Cole (Origin retold); Bob Davis (Cameo); Simba Karno (Guest Star); Professor Blair; Dr. Fulton; Binda (dinosaur); Reggie Mocton; Alex; Major Farr; Steve Mocton; Fred Mocton; Peter; Billy; Major Farr (great-grandfather); Frank; Joe