CluesUnited States1926–1943221 issues
CL#V41N02 (1939-January)#V41N02 (1939-January)
- CL#V41N03 (1939-February)
#V41N03 (1939-February)
- CL#V41N04 (1939-March)
#V41N04 (1939-March)
- CL#V41N05 (1939-April)
#V41N05 (1939-April)
- CL#V41N06 (1939-May)
#V41N06 (1939-May)
- CL#V42N01 (1939-June)
#V42N01 (1939-June)
- CL#V42N02 (1939-July)
#V42N02 (1939-July)
- CL#V42N03 (1939-August)
#V42N03 (1939-August)
- CL#V42N04 (1939-September)
#V42N04 (1939-September)
- CL#V42N05 (1939-October)
#V42N05 (1939-October)
- CL#V42N06 (1939-November)
#V42N06 (1939-November)
- CL#V43N01 (1939-December)
#V43N01 (1939-December)