CluesUnited States1926–1943221 issues
CL#V39N02 (1938-January)#V39N02 (1938-January)
- CL#V39N03 (1938-February)
#V39N03 (1938-February)
- CL#V39N04 (1938-March)
#V39N04 (1938-March)
- CL#V39N05 (1938-April)
#V39N05 (1938-April)
- CL#V39N06 (1938-May)
#V39N06 (1938-May)
- CL#V40N01 (1938-June)
#V40N01 (1938-June)
- CL#V40N02 (1938-July)
#V40N02 (1938-July)
- CL#V40N03 (1938-August)
#V40N03 (1938-August)
- CL#V40N04 (1938-September)
#V40N04 (1938-September)
- CL#V40N05 (1938-October)
#V40N05 (1938-October)
- CL#V40N06 (1938-November)
#V40N06 (1938-November)
- CL#V41N01 (1938-December)
#V41N01 (1938-December)