| United States |
| 1847 Issue (16) |
| 1851 Issue (22) |
| 1857 Issue (34) |
| 1861 Premiere Gravures (4) |
| 1861-1866 Issue (21) |
| 1867 Grilled Issue (13) |
| 1869 Pictorial Issue (14) |
| 1870-1871 National Bank Note Co. Issue, H Grill (12) |
| 1870-1871 National Bank Note Co. Issue, without gr (5) |
| 1873 Continental Bank Note Co. Issue, white wove (5) |
| 1875 Re-issue of the 1861-1866 Issue (1) |
| 1875 Re-issue of the 1869 Pictorial Issue (5) |
| 1875 Reprints of the 1857 Issue (2) |
| 1875 Reproductions of the 1847 Issue (4) |
| 1875 Special Printing of the 1873 Continental Issu (6) |
| 1879 American Bank Note Co. Issue, soft paper (6) |
| 1880-1882 Special Printings of the 1879 & 1882 ABN (2) |
| 1881-1882 American Bank Note Co. Issue, re-engrave (4) |
| 1887 American Bank Note Co. Issue (3) |
| 1890-1893 Small Bank Notes Issue (5) |
| 1893 Columbian Issue (33) |
| 1894 First Bureau Issue, Unwatermarked (8) |
| 1895 First Bureau Issue, Watermarked (16) |
| 1898 First Bureau Issue, UPU colors (2) |
| 1898 Trans-Mississippi Issue (20) |
| 1901 Pan-American Issue (18) |
| 1902-1908 Second Bureau Issue (18) |
| 1904 Louisiana Purchase Issue (5) |
| 1907 Jamestown Issue (7) |
| 1908-1909 Washington-Franklin Issue, DL wmk, perf (2) |
| 1908-1910 Washington-Franklin Issue, DL wmk, perf (5) |
| 1909 Commemorative Issues (6) |
| 1909 Washington-Franklin Issue, Bluish Paper (3) |
| 1910-1911 Washington-Franklin Issue, SL wmk, perf (7) |
| 1910-1913 Washington-Franklin Issue, SL wmk, perf (5) |
| 1912 Washington-Franklin Issue, DL wmk, perf 12 (3) |
| 1912 Washington-Franklin Issue, SL wmk, perf 8½ co (3) |
| 1912-1914 Washington-Franklin Issue, SL wmk, perf (6) |
| 1913-1915 Panama-Pacific Issue (13) |
| 1913-1915 Washington-Franklin Issue, SL wmk, perf (3) |
| 1914 Washington-Franklin Issue, SL wmk, imperf, ro (1) |
| 1914 Washington-Franklin Issue, SL wmk, perf 10 co (5) |
| 1914-1916 Washington-Franklin Issue, SL wmk, perf (3) |
| 1915 Washington-Franklin Issue, SL wmk, perf 11 (1) |
| 1916-1917 Washington-Franklin Issue, flat plate, u (16) |
| 1916-1922 Washington-Franklin Issue, rotary plate, (1) |
| 1917-1919 Washington-Franklin Issue, flat plate, u (24) |
| 1918 Washington-Franklin Issue, flat plate, perf 1 (3) |
| 1918-1920 Washington-Franklin Issue, offset, imper (5) |
| 1918-1920 Washington-Franklin Issue, offset, perf (3) |
| 1919 Victory Issue (1) |
| 1919 Washington-Franklin Issue, offset, perf 12½ (1) |
| 1919-1920 Washington-Franklin Issue, rotary coil w (3) |
| 1920 Pilgrim Tercentenary Issue (2) |
| 1920 Washington-Franklin Issue, flat plate, perf 1 (1) |
| 1921 Washington-Franklin Issue, rotary coil waste, (1) |
| 1922 Washington-Franklin Issue, rotary sheet waste (2) |
| 1922-1929 Fourth Bureau Issue (28) |
| 1924 Huguenot-Walloon Tercentenary Issue (2) |
| 1925-1929 Issues (5) |
| 1929 Kansas-Nebraska Issue (6) |
| 1929-1937 Issues (2) |
| 1938-1954 Presidential Series (9) |
| 1938-Present Issues (39) |
| Advertising/Illustrated Covers (1) |
| Airmail (32) |
| Airmail Postal History (2) |
| Record Flights (1) |
| Zeppelin Covers: Graf Zeppelin LZ 127 Flights (12) |
| Booklets (3) |
| Cacheted Covers |
| Hand-Painted: Karl Lewis (1) |
| Roessler (1) |
| Campaign & Inauguration Covers (1) |
| Cancels & Postmarks |
| Fancy Cancels: Pictorial Designs (3) |
| Carrier - Semi-Official (5) |
| Confederate Civil War Postal History (2) |
| Patriotic Covers (1) |
| Cuba (2) |
| Essays, Trial Colors & Proofs (32) |
| Exposition Covers & Postmarks (8) |
| First Day Covers (36) |
| Hand-Painted (2) |
| Printed Cachets (9) |
| General Issues (13) |
| General Postal History by Year (1) |
| Guam (2) |
| Hunting Permit |
| Duck Stamps (48) |
| Local (12) |
| Military-/War-Related Covers |
| World War II Patriotic Covers (1) |
| Miscellaneous Back-of-the-Book (1) |
| Newspaper (15) |
| Official (46) |
| Parcel Post (10) |
| Parcel Post Postage Due (3) |
| Post Office Seals (1) |
| Postage Due (6) |
| Postal Stationery |
| Envelopes & Wrappers (134) |
| Official Envelopes (3) |
| Postal Cards (10) |
| Postmasters’ Provisionals (7) |
| Puerto Rico (2) |
| Registration (1) |
| Revenue (6) |
| Narcotic Tax (1) |
| Private Die Match (1) |
| Private Die Medicine (2) |
| Proprietary (2) |
| Stock Transfer (3) |
| Wines (4) |
| Ryukyu Islands (21) |
| Revenue (1) |
| Sanitary Fair (2) |
| Savings |
| War Savings (1) |
| Ship Covers |
| Inland Waterways (1) |
| Special Delivery (17) |
| Stampless Covers (2) |
| State/Territorial Postal History |
| California (1) |
| Connecticut (1) |
| Dakota Territory (1) |
| Louisiana (1) |
| Test Stamps (2) |
| U.S. Postal Agency in China (4) |
| Union Civil War Postal History |
| Patriotic Covers: Caricatures (2) |
| Patriotic Covers: Misc. Subjects: Cannons (1) |
| Patriotic Covers: States (1) |
| Prisoner of War Covers, Northern Prisons (2) |
| Vending & Affixing Machine Perforations |
| U.S. Automatic (1) |
