Mammoth Western
Ziff-Davis Publishing Co.United States1945–195151 issues
MA#V06N01 (1950-January)#V06N01 (1950-January)
- MA#V06N02 (1950-February)
#V06N02 (1950-February)
- MA#V06N03 (1950-March)
#V06N03 (1950-March)
- MA#V06N04 (1950-April)
#V06N04 (1950-April)
- MA#V06N05 (1950-May)
#V06N05 (1950-May)
- MA#V06N06 (1950-June)
#V06N06 (1950-June)
- MA#V06N07 (1950-July)
#V06N07 (1950-July)
- MA#V06N08 (1950-August)
#V06N08 (1950-August)
- MA#V06N09 (1950-September)
#V06N09 (1950-September)
- MA#V06N10 (1950-October)
#V06N10 (1950-October)
- MA#V06N11 (1950-November)
#V06N11 (1950-November)
- MA#V06N12 (1950-December)
#V06N12 (1950-December)