| United States |
| 1873 1¢ Postal Card Issue UX1 - Essays, Proof (30) |
| 1873 1¢ Postal Card Issue UX3 - Sample, Trial (16) |
| 1873 1¢ Postal Card Issue UX4 - Essays, Annou (26) |
| 1875 1¢ Postal Card Issue UX5 - Trial Colors, (12) |
| 1876-77 Plimpton Envelope Co. Essays (19) |
| 1879 2¢ Postal Card Issue UX6 - Trial Color P (12) |
| 1881 1¢ Postal Card Issue UX7 - Trial Color P (2) |
| 1886 1¢ Postal Card Issue UX9 - Trial Colors, (14) |
| 1891 1¢ Postal Card Issue UX10 - Essays, Prod (20) |
| 1891 1¢ Postal Card Issue UX11 - Trial Colors (10) |
| 1892-1926 Postal Card - Paid Reply Issues UY1-UY12 (40) |
| 1897 1¢ Postal Card Issue UX14 - Proofs, Issu (5) |
| 1897 2¢ Postal Card Issue UX13 - Specimens (2) |
| 1902 1¢ "Full-Face McKinley" Postal C (20) |
| 1902 1¢ Postal Card Issue UX18 - Essays, Proo (10) |
| 1910 1¢ Postal Card Issue UX21 - Essays, Issu (15) |
| 1910 1¢ Postal Card Issue UX22 - Proof, Issue (9) |
| 1911 1¢ Postal Card Issue UX23 - Photo Essays (2) |
| 1911 1¢ Postal Card Issue UX24 - Issued Cards (2) |
| 1911 2¢ Postal Card Issue UX25 - Essays, Issu (3) |
| 1914 1¢ Postal Card Issue UX27 - Issued Cards (11) |
| 1917 1¢ Postal Card Issue UX28 - Essays (6) |
| 1918-1973 Postal Card Issues UX30-UX66 (11) |
| Forerunner Essays - American, Continental & Nation (15) |
| Forerunner Essays - H. Lipman, M. Condon, American (17) |
| Money Order and Postal Tag Essays (4) |
| Official Postal Cards (2) |
| Postal Card - Paid Reply Essays (22) |
| Postal Cards - Canal Zone (6) |
| Postal Cards - Hawaii including Postal Stationery (15) |