| United States |
| 1847 Issue (31) |
| 1851 Issue (18) |
| 1857 Issue (26) |
| 1861 Premiere Gravures (3) |
| 1861-1866 Issue (44) |
| 1867 Grilled Issue (20) |
| 1869 Pictorial Issue (53) |
| 1870-1871 National Bank Note Co. Issue, H Grill (6) |
| 1870-1871 National Bank Note Co. Issue, without gr (17) |
| 1873 Continental Bank Note Co. Issue, white wove (13) |
| 1875 Re-issue of the 1869 Pictorial Issue (8) |
| 1875 Reprints of the 1857 Issue (21) |
| 1875 Reproductions of the 1847 Issue (15) |
| 1875 Special Printing of the 1873 Continental Issu (1) |
| 1879 American Bank Note Co. Issue, soft paper (26) |
| 1881-1882 American Bank Note Co. Issue, re-engrave (11) |
| 1887 American Bank Note Co. Issue (3) |
| 1890-1893 Small Bank Notes Issue (9) |
| 1893 Columbian Issue (35) |
| 1894 First Bureau Issue, Unwatermarked (16) |
| 1895 First Bureau Issue, Watermarked (19) |
| 1898 First Bureau Issue, UPU colors (3) |
| 1898 Trans-Mississippi Issue (20) |
| 1901 Pan-American Issue (4) |
| 1902-1908 Second Bureau Issue (21) |
| 1904 Louisiana Purchase Issue (7) |
| 1907 Jamestown Issue (2) |
| 1908-1909 Washington-Franklin Issue, DL wmk, imper (2) |
| 1908-1909 Washington-Franklin Issue, DL wmk, perf (10) |
| 1908-1910 Washington-Franklin Issue, DL wmk, perf (1) |
| 1909 Commemorative Issues (7) |
| 1909 Washington-Franklin Issue, Bluish Paper (3) |
| 1910-1911 Washington-Franklin Issue, SL wmk, perf (7) |
| 1910-1913 Washington-Franklin Issue, SL wmk, perf (7) |
| 1912 Washington-Franklin Issue, DL wmk, perf 12 (1) |
| 1912 Washington-Franklin Issue, SL wmk, imperf (2) |
| 1912 Washington-Franklin Issue, SL wmk, perf 8½ co (3) |
| 1912-1914 Washington-Franklin Issue, SL wmk, perf (19) |
| 1913-1915 Panama-Pacific Issue (15) |
| 1913-1915 Washington-Franklin Issue, SL wmk, perf (18) |
| 1914 Washington-Franklin Issue, SL wmk, imperf, ro (2) |
| 1914 Washington-Franklin Issue, SL wmk, perf 10 co (6) |
| 1914-1916 Washington-Franklin Issue, SL wmk, perf (6) |
| 1915 Washington-Franklin Issue, DL wmk, perf 10 (1) |
| 1915 Washington-Franklin Issue, SL wmk, perf 11 (2) |
| 1916-1917 Washington-Franklin Issue, flat plate, u (23) |
| 1916-1922 Washington-Franklin Issue, rotary plate, (7) |
| 1917 Washington-Franklin Issue, flat plate, DL wmk (2) |
| 1917-1919 Washington-Franklin Issue, flat plate, u (33) |
| 1918 Washington-Franklin Issue, flat plate, perf 1 (6) |
| 1918-1920 Washington-Franklin Issue, offset, imper (3) |
| 1918-1920 Washington-Franklin Issue, offset, perf (9) |
| 1919 Victory Issue (3) |
| 1919 Washington-Franklin Issue, offset, perf 12½ (1) |
| 1919-1920 Washington-Franklin Issue, rotary coil w (5) |
| 1920 Pilgrim Tercentenary Issue (4) |
| 1920 Washington-Franklin Issue, flat plate, perf 1 (3) |
| 1921 Washington-Franklin Issue, rotary coil waste, (2) |
| 1922-1929 Fourth Bureau Issue (53) |
| 1923 Harding Memorial Issue (1) |
| 1925 Lexington-Concord Sesquicentenary Issue (2) |
| 1925 Norse-American Issue (1) |
| 1925-1929 Issues (12) |
| 1929 Kansas-Nebraska Issue (4) |
| 1929-1937 Issues (27) |
| 1938-1954 Presidential Series (2) |
| 1938-Present Issues (294) |
| Airmail (90) |
| Airmail Special Delivery (1) |
| Booklets (2) |
| Carrier (4) |
| Carrier - Semi-Official (1) |
| Christmas Seals (1) |
| Computer-Vended Postage (3) |
| Essays & Proofs |
| Printers' Samples (3) |
| Hunting Permit |
| Duck Stamps (12) |
| Junior Duck Stamps (4) |
| State Duck Stamps [to sort alpha by state then cat (1) |
| Local (8) |
| Miscellaneous Back-of-the-Book (2) |
| Cinderellas (1) |
| Newspaper (29) |
| Official (54) |
| Parcel Post (10) |
| Post Office Seals (1) |
| Registry (1) |
| Postage Currency (2) |
| Postage Due (16) |
| Postal Note (4) |
| Postal Stationery |
| Airmail Envelopes (11) |
| Airmail Postal Cards (1) |
| Envelopes & Wrappers (15) |
| Message-Reply Postal Cards (3) |
| Official Envelopes (1) |
| Postal Cards (8) |
| Postmasters’ Provisionals (6) |
| Revenue (78) |
| Consular Service Fee (1) |
| Distilled Spirits Excise Tax (1) |
| Motor Vehicle Use (1) |
| Narcotic Tax (6) |
| Potato Tax (2) |
| Private Die Match (10) |
| Private Die Medicine (19) |
| Private Die Perfumery (3) |
| Private Die Playing Card (1) |
| Proprietary (9) |
| Revenue Stamped Paper (6) |
| Silver Tax (3) |
| Stock Transfer (11) |
| Wines (1) |
| Sanitary Fair (6) |
| Savings (1) |
| War Savings (2) |
| Special Delivery (16) |
| Special Handling (1) |
| Telegraph (5) |
| Test Stamps & Test Booklets (10) |
| U.S. Postal Agency in China (14) |
| U.S. Registry Exchange Labels (1) |
