Three conquerors 1931: Grif Teller, Giant Conquerors of Space and Time. Library of Congress, https://www.loc.gov/resource/ppmsca.30680/. Color and detail restored. 2022
1931: Grif Teller, Giant Conquerors of Space and Time. Library of Congress, https://www.loc.gov/resource/ppmsca.30680/. Color and detail restored.
2022