| United States |
| 1863 Issue (Scott 73) (13) |
| 1868 D. and Z. Grills (Scott 84, 85B) (14) |
| 1868 E. and F. Grills (Scott 87, 93) (12) |
| 1875 Re-Issue of 1863 Issue (Scott 103) (3) |
| Advertising Covers by Subject (19) |
| Advertising Covers by Subject, cont. (57) |
| Andrew Jackson Autographs and Ephemera (8) |
| Biscect Uses (6) |
| Die and Plate Proofs (14) |
| Domestic Rates, Valentines (20) |
| Early Dates (6) |
| Essays and Trial Color Proofs (15) |
| Express and Local Posts (8) |
| Fancy Cancels: New York City (8) |
| Fancy Cancels: New York City Bees, Stars, Green (7) |
| Fancy Cancels: New York City Blues (14) |
| Fancy Cancels: New York City Reds (16) |
| Fancy Cancels: Other Towns (11) |
| Fancy Cancels: Other Towns, cont. (28) |
| Fancy Cancels: Waterbury Conn. (2) |
| Foreign Mails: Africa (3) |
| Foreign Mails: Australian States (4) |
| Foreign Mails: Austria and Hungary (4) |
| Foreign Mails: Belgium (3) |
| Foreign Mails: British Columbia and Vancouver Isla (5) |
| Foreign Mails: British North America and North Atl (20) |
| Foreign Mails: Caribbean (13) |
| Foreign Mails: Central America (6) |
| Foreign Mails: Ceylon (2) |
| Foreign Mails: China (11) |
| Foreign Mails: Denmark (3) |
| Foreign Mails: Egypt (1) |
| Foreign Mails: France (13) |
| Foreign Mails: French Indochina (1) |
| Foreign Mails: Germany (22) |
| Foreign Mails: Great Britain and British Isles (15) |
| Foreign Mails: Greece (1) |
| Foreign Mails: Hawaii (6) |
| Foreign Mails: Holland (The Netherlands) (7) |
| Foreign Mails: India (4) |
| Foreign Mails: Italy (14) |
| Foreign Mails: Japan (2) |
| Foreign Mails: Netherlands East Indies (1) |
| Foreign Mails: Norway (3) |
| Foreign Mails: Rome (8) |
| Foreign Mails: Russia (2) |
| Foreign Mails: South America (7) |
| Foreign Mails: Spain (5) |
| Foreign Mails: Sweden (3) |
| Foreign Mails: Switzerland (11) |
| Foreign Mails: The Philippines (1) |
| Foreign Mails: Turkey (2) |
| Foreign Mails: Venice (Austria, Italy) (2) |
| Illegal and Revenue Usage (6) |
| Imprint and Plate Numbers, Specialized Study (16) |
| Official Imprints and Usage (8) |
| Postal Stationery (6) |
| Precancels (4) |
| Printing Varieties and Shifts (10) |
| Registered Uses, Auxiliary Markings (7) |
| Specimen Overprints, Experimental Papers (6) |
| Steamboat, Telegraph and Railroad (8) |
| Territorial and Western (6) |
| The Civil War: Angell Covers and Other Illustrated (12) |
| The Civil War: Campaign Designs (6) |
| The Civil War: Military Usage (7) |
| The Civil War: Post-War Expresses (2) |
| The Civil War: Prisoner-of-War and Through-the-Lin (11) |
| The Civil War: Sanitary Fairs, Relief, Christian C (31) |