| United States |
| 1847 Issue (18) |
| 1851 Issue (23) |
| 1857 Issue (38) |
| 1861 Premiere Gravures (1) |
| 1861-1866 Issue (40) |
| 1867 Grilled Issue (35) |
| 1869 Pictorial Issue (26) |
| 1870-1871 National Bank Note Co. Issue, H Grill (16) |
| 1870-1871 National Bank Note Co. Issue, without gr (11) |
| 1873 Continental Bank Note Co. Issue, white wove (8) |
| 1875 Continental Bank Note Co. Issue, yellowish wo (2) |
| 1875 Re-issue of the 1861-1866 Issue (4) |
| 1875 Re-issue of the 1869 Pictorial Issue (20) |
| 1875 Reprints of the 1857 Issue (4) |
| 1875 Reproductions of the 1847 Issue (9) |
| 1879 American Bank Note Co. Issue, soft paper (12) |
| 1881-1882 American Bank Note Co. Issue, re-engrave (7) |
| 1887 American Bank Note Co. Issue (12) |
| 1890-1893 Small Bank Notes Issue (14) |
| 1893 Columbian Issue (51) |
| 1894 First Bureau Issue, Unwatermarked (22) |
| 1895 First Bureau Issue, Watermarked (18) |
| 1898 First Bureau Issue, UPU colors (9) |
| 1898 Trans-Mississippi Issue (31) |
| 1901 Pan-American Issue (15) |
| 1902-1908 Second Bureau Issue (31) |
| 1904 Louisiana Purchase Issue (13) |
| 1907 Jamestown Issue (6) |
| 1908-1909 Washington-Franklin Issue, DL wmk, perf (10) |
| 1908-1910 Washington-Franklin Issue, DL wmk, perf (14) |
| 1909 Commemorative Issues (6) |
| 1909 Washington-Franklin Issue, Bluish Paper (5) |
| 1910 Washington-Franklin Issue, SL wmk, imperf (2) |
| 1910-1911 Washington-Franklin Issue, SL wmk, perf (12) |
| 1910-1913 Washington-Franklin Issue, SL wmk, perf (15) |
| 1912 Washington-Franklin Issue, DL wmk, perf 12 (3) |
| 1912 Washington-Franklin Issue, SL wmk, perf 8½ co (4) |
| 1912-1914 Washington-Franklin Issue, SL wmk, perf (9) |
| 1913-1915 Panama-Pacific Issue (23) |
| 1913-1915 Washington-Franklin Issue, SL wmk, perf (17) |
| 1914 Washington-Franklin Issue, SL wmk, imperf, ro (6) |
| 1914 Washington-Franklin Issue, SL wmk, perf 10 co (16) |
| 1914-1916 Washington-Franklin Issue, SL wmk, perf (12) |
| 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 (3) |
| 1917-1919 Washington-Franklin Issue, flat plate, u (34) |
| 1918 Washington-Franklin Issue, flat plate, perf 1 (4) |
| 1918-1920 Washington-Franklin Issue, offset, imper (4) |
| 1918-1920 Washington-Franklin Issue, offset, perf (4) |
| 1919 Victory Issue (2) |
| 1919 Washington-Franklin Issue, offset, perf 12½ (3) |
| 1919-1920 Washington-Franklin Issue, rotary coil w (3) |
| 1920 Pilgrim Tercentenary Issue (3) |
| 1920 Washington-Franklin Issue, flat plate, perf 1 (5) |
| 1921 Washington-Franklin Issue, rotary coil waste, (1) |
| 1922 Washington-Franklin Issue, rotary sheet waste (2) |
| 1922-1929 Fourth Bureau Issue (24) |
| 1924 Huguenot-Walloon Tercentenary Issue (2) |
| 1925 Lexington-Concord Sesquicentenary Issue (1) |
| 1925 Norse-American Issue (2) |
| 1925-1929 Issues (5) |
| 1929 Kansas-Nebraska Issue (10) |
| 1929-1937 Issues (6) |
| 1938-1954 Presidential Series (2) |
| 1938-Present Issues (13) |
| Airmail (52) |
| Christmas Seals (1) |
| Essays, Trial Colors & Proofs (245) |
| Hunting Permit |
| Duck Stamps (13) |
| Junior Duck Stamps (1) |
| State Duck Stamps (1) |
| Local (4) |
| Newspaper (55) |
| Official (34) |
| Parcel Post (29) |
| Parcel Post Postage Due (1) |
| Plate Number Singles, Blocks & Coils (152) |
| Post Office Seals (1) |
| Postage Currency (3) |
| Postage Due (51) |
| Postal Stationery |
| Envelopes & Wrappers (1) |
| Postmasters’ Provisionals (3) |
| Registration (1) |
| Revenue |
| First to Third Issues (2) |
| Narcotic Tax (1) |
| Private Die Match (1) |
| Private Die Medicine (1) |
| Savings (1) |
| War Savings (2) |
| Special Delivery (27) |
| Telegraph (1) |
| U.S. Postal Agency in China (19) |
| Vending & Affixing Machine Perforations (1) |
