| United States |
| 1847 Issue (17) |
| 1851 Issue (20) |
| 1857 Issue (40) |
| 1861 Premiere Gravures (4) |
| 1861-1866 Issue (44) |
| 1867 Grilled Issue (43) |
| 1869 Pictorial Issue (59) |
| 1870-1871 National Bank Note Co. Issue, H Grill (10) |
| 1870-1871 National Bank Note Co. Issue, without gr (11) |
| 1873 Continental Bank Note Co. Issue, white wove (5) |
| 1875 Re-issue of the 1861-1866 Issue (14) |
| 1875 Re-issue of the 1869 Pictorial Issue (17) |
| 1875 Reprints of the 1857 Issue (14) |
| 1875 Reproductions of the 1847 Issue (7) |
| 1875 Special Printing of the 1873 Continental Issu (1) |
| 1879 American Bank Note Co. Issue, soft paper (7) |
| 1880-1882 Special Printings of the 1879 & 1882 ABN (1) |
| 1881-1882 American Bank Note Co. Issue, re-engrave (8) |
| 1887 American Bank Note Co. Issue (10) |
| 1890-1893 Small Bank Notes Issue (19) |
| 1893 Columbian Issue (45) |
| 1894 First Bureau Issue, Unwatermarked (20) |
| 1895 First Bureau Issue, Watermarked (23) |
| 1898 First Bureau Issue, UPU colors (6) |
| 1898 Trans-Mississippi Issue (28) |
| 1901 Pan-American Issue (12) |
| 1902-1908 Second Bureau Issue (28) |
| 1904 Louisiana Purchase Issue (3) |
| 1907 Jamestown Issue (3) |
| 1908-1909 Washington-Franklin Issue, DL wmk, perf (7) |
| 1908-1910 Washington-Franklin Issue, DL wmk, perf (12) |
| 1909 Commemorative Issues (4) |
| 1909 Washington-Franklin Issue, Bluish Paper (7) |
| 1910-1911 Washington-Franklin Issue, SL wmk, perf (11) |
| 1910-1913 Washington-Franklin Issue, SL wmk, perf (7) |
| 1912 Washington-Franklin Issue, DL wmk, perf 12 (5) |
| 1912-1914 Washington-Franklin Issue, SL wmk, perf (7) |
| 1913-1915 Panama-Pacific Issue (11) |
| 1913-1915 Washington-Franklin Issue, SL wmk, perf (12) |
| 1914 Washington-Franklin Issue, SL wmk, imperf, ro (3) |
| 1914 Washington-Franklin Issue, SL wmk, perf 10 co (10) |
| 1914-1916 Washington-Franklin Issue, SL wmk, perf (6) |
| 1915 Washington-Franklin Issue, DL wmk, perf 10 (4) |
| 1915 Washington-Franklin Issue, SL wmk, perf 11 (1) |
| 1916-1917 Washington-Franklin Issue, flat plate, u (27) |
| 1916-1922 Washington-Franklin Issue, rotary plate, (1) |
| 1917 Washington-Franklin Issue, flat plate, DL wmk (4) |
| 1917-1919 Washington-Franklin Issue, flat plate, u (13) |
| 1918 Washington-Franklin Issue, flat plate, perf 1 (7) |
| 1918-1920 Washington-Franklin Issue, offset, imper (5) |
| 1919-1920 Washington-Franklin Issue, rotary coil w (1) |
| 1920 Washington-Franklin Issue, flat plate, perf 1 (5) |
| 1921 Washington-Franklin Issue, rotary coil waste, (2) |
| 1922-1929 Fourth Bureau Issue (15) |
| 1925-1929 Issues (2) |
| 1929 Kansas-Nebraska Issue (1) |
| 1929-1937 Issues (2) |
| 1938-Present Issues (33) |
| Airmail (23) |
| Canal Zone (10) |
| Carrier (1) |
| Christmas Seals (1) |
| General Issues (7) |
| Hawaii (1) |
| Hunting Permit |
| Duck Stamps (8) |
| Junior Duck Stamps (1) |
| Local (2) |
| Miscellaneous Back-of-the-Book |
| Cinderellas (1) |
| Newspaper (7) |
| Official (3) |
| Parcel Post (5) |
| Postage Due (9) |
| Postal Stationery |
| Airmail Envelopes (1) |
| Envelopes & Wrappers (2) |
| Postal Cards (4) |
| Postmasters’ Provisionals (4) |
| Registration (1) |
| Revenue |
| Beer (1) |
| Private Die Medicine (3) |
| Proprietary (1) |
| Silver Tax (1) |
| Special Delivery (3) |
| Test Booklets (1) |
| Test Stamps (2) |
| U.S. Postal Agency in China (2) |
