Flight of the Dawn Star by Robert Moore Williams “Flight of the Dawn Star” by Robert Moore Williams, Astounding Science-Fiction, March 1938.
The Tides of Time by Robert Moore Williams “The Tides of Time” by Robert Moore Williams, Thrilling Wonder Stories, April 1940.
The Incredible Slingshot Bombs by Robert Moore Williams “The Incredible Slingshot Bombs” by Robert Moore Williams, Amazing Stories, May 1942.