CluesUnited States1926–1943221 issues
CL#V05N01 (1928-January)#V05N01 (1928-January)
- CL#V05N02 (1928-February)
#V05N02 (1928-February)
- CL#V05N03 (1928-February)
#V05N03 (1928-February)
- CL#V05N04 (1928-March)
#V05N04 (1928-March)
- CL#V06N01 (1928-March)
#V06N01 (1928-March)
- CL#V06N02 (1928-April)
#V06N02 (1928-April)
- CL#V06N03 (1928-April)
#V06N03 (1928-April)
- CL#V06N04 (1928-May)
#V06N04 (1928-May)
- CL#V07N01 (1928-May)
#V07N01 (1928-May)
- CL#V07N02 (1928-June)
#V07N02 (1928-June)
- CL#V07N03 (1928-June)
#V07N03 (1928-June)
- CL#V07N04 (1928-July)
#V07N04 (1928-July)
- CL#V08N01 (1928-July)
#V08N01 (1928-July)
- CL#V08N02 (1928-August)
#V08N02 (1928-August)
- CL#V08N03 (1928-August)
#V08N03 (1928-August)
- CL#V08N04 (1928-September)
#V08N04 (1928-September)
- CL#V09N01 (1928-September)
#V09N01 (1928-September)
- CL#V09N02 (1928-October)
#V09N02 (1928-October)
- CL#V09N03 (1928-October)
#V09N03 (1928-October)
- CL#V10N01 (1928-November)
#V10N01 (1928-November)
- CL#V09N04 (1928-November)
#V09N04 (1928-November)
- CL#V10N02 (1928-December)
#V10N02 (1928-December)
- CL#V10N03 (1928-December)
#V10N03 (1928-December)