| United States |
| 1851 Issue (8) |
| 1857 Issue (13) |
| 1861-1866 Issue (13) |
| 1867 Grilled Issues (26) |
| 1869 Pictorial Issue (12) |
| 1870-1871 National Bank Note Co. Issue, Grilled (10) |
| 1870-1871 National Bank Note Co. Issue, Without Gr (4) |
| 1873-1875 Continental Bank Note Co. Issue (3) |
| 1875 "Hard Paper" Special Printings (11) |
| 1875 Re-issue of the 1861-1866 Issues (8) |
| 1875 Reprints of the 1857 Issue (6) |
| 1880 "Soft Paper" Special Printings (7) |
| 1890 A.B.N.C. Small Bank Note Issue (2) |
| 1893 Columbian & 1898 Trans-Mississippi Issues (5) |
| 1893-1920 Issues (14) |
| 1901 Pan-American Issue (4) |
| 1902-1908 Regular Issues (13) |
| 1904 Louisiana Purchase & Jamestown Issues (3) |
| 1908-1910 Washington-Franklin Issue, DL Watermark (38) |
| 1909 Bluish Paper Issue (9) |
| 1909 Commemorative Issues (4) |
| 1910-1911 Washington-Franklin Issue, SL Watermark (35) |
| 1912-1914 Washington-Franklin Issue, SL Watermark, (9) |
| 1913-1915 Panama-Pacific Issue (1) |
| 1914-1915 Washington-Franklin Issue, SL Watermark, (46) |
| 1916-1919 Washington-Franklin Issue, Unwatermarked (7) |
| 1922-1925 Bureau Issue (21) |
| 1922-1925 Regular Issue (3) |
| 1923 Warren G. Harding, Imperforate (5) |
| 1923 Warren G. Harding, Perf. 11 (33) |
| 1923 Warren G. Harding, Rotary Press Issues (5) |
| 1923-1927 Issues (16) |
| 1923-39 Coil Issues (12) |
| 1928-2007 Issues (14) |
| 1929-1995 Issues (23) |
| 1954-68 Liberty Issue (15) |
| 1965-78 Prominent Americans (12) |
| 1969-1983 Coil Issues (25) |
| 1985-2012 Coil Issues (37) |
| 19th Century Issues on Cover (24) |
| 20th Century Issues on Cover (13) |
| Advertising Covers (12) |
| Airmail & Special Delivery Issues (4) |
| Attleboro Stamp Co. (2) |
| Civil War Patriotics (5) |
| Duck Stamps (17) |
| Imperforate Flat Plate Coil Stamps (14) |
| International Vending Machine Co. (7) |
| Officials to Revenues (7) |
| Postal History (5) |
| Postmasters' Provisionals & 1847 Issue (11) |
| Prisoner of War Covers (10) |
| Railroad Covers (3) |
| Test Stamps (13) |
| The Brinkerhoff Co. (4) |
| The Farwell Co. (10) |
| The Mail-O-Meter Co. (9) |
| The Schermack Co. (28) |
| U.S. Automatic Vending Co. (12) |
