United States Covers
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By Franking
- 1861-8 Issue (11)
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- Banknotes (255)
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- Famous Americans (225)
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- Personal Computer Postage (50)
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- Prexies (1449)
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- Transport Issue (446)
- Transportation Coils (19)
- United States Government Postal Cards (2953)
- United States Post 1950's Commemoratives (2592)
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- Washington Franklins (4172)
- Winged Globes (114)
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By Usage
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- Penalty (164)
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- Slogan Cancel (5209)
- Spray-On Cancel (124)
- U.S. A.P.O.'s (1307)
- U.S. Flag's (1823)
- U.S. Marine Corps (58)
- U.S. R.P.O.'s (1612)
- U.S. Ships (3994)
- United States First Day Cover (5981)
- Washington Bicentennial (259)
- Washington Bicentennial Event (884)
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