U.S. Scott 817 12 Cent Prexie Solo on Double Weight Air Mail Cover

U.S. Scott 815 Prexie and 1033 Liberty on Airmail Allis-Chalmers Ad Cover

U.S. Scott 830, 812 Prexies, C39 Air Mail on Registered Return Receipt Cover

U.S. Scott 812 7 Cent Prexie USPOD First Day Announcement Card

U.S. Scott 822 17 Cent Prexie USPOD First Day Announcement Card

U.S. Scott 815, 811 Prexies on Air Mail Special Deliver 1943 Patriotic AdCover

U.S. Scott 825 and 804 Prexies on Registered Return Receipt 1939 Cover

U.S. Scott 826 Electric Eye FDC Post Marked in Washington, DC

U.S. Scott 813 Electric Eye FDC Post Marked in Washington, DC

U.S. Scott 815 (2) Prexies on Air Mail Special Delivery California Cover