| #C32-C132 Airmails Complete 1946-1993 | |
| #C32 5¢ DC-4 Skymaster | |
| #C33 5¢ DC-4 Skymaster | |
| #C34 10¢ Pan American Union Building | |
| #C35 15¢ Statue of Liberty & Skyline | |
| #C36 25¢ San Francisco-Oakland Bay Bridge | |
| #C37 5¢ DC-4 Skymaster coil | |
| #C38 5¢ Map of 5 Boroughs of New York City | |
| #C39 6¢ DC-4 Skymaster | |
| #C40 6¢ Alexandria Bicentennial | |
| #C41 6¢ DC-4 Skymaster coil | |
| #C42 10¢ Universal Postal Union Issue | |
| #C43 15¢ Universal Postal Union Issue | |
| #C44 25¢ Universal Postal Union Issue | |
| #C45 6¢ Wright Brothers | |
| #C46 80¢ Diamond Head, Hawaii | |
| #C47 6¢ Powered Flight Anniversary | |
| #C48 4¢ Eagle in Flight | |
| #C49 6¢ Air Force Anniversary | |
| #C50 5¢ Eagle in Flight | |
| #C51 7¢ Silhouette of Jet Airliner blue | |
| #C52 7¢ Silhouette of Jet Airliner coil | |
| #C53 7¢ Alaska Statehood | |
| #C54 7¢Balloon Jupiter Centennial | |
| #C55 7¢ Hawaii Statehood | |
| #C56 Pan American Games | |
| #C57 10¢ Liberty Bell | |
| #C58 15¢ Statue of Liberty | |
| #C59 25¢ Abraham Lincoln | |
| #C60 7¢ Silhouette of Jet Airliner carmine | |
| #C61 7¢ Silhouette of Jet Airliner coil | |
| #C62 13¢ Liberty Bell | |
| #C63 15¢ Statue of Liberty | |
| #C64 8¢ Capital Dome booklet stamp | |
| #C65 8¢ Capital Dome coil | |
| #C66 15¢ Montgomery Blair Issue | |
| #C67 6¢ Bald Eagle | |
| #C68 8¢ Amelia Earhart Issue | |
| #C69 8¢ Robert H. Goddard Issue | |
| #C70 8¢ Alaska Purchase Centenary | |
| #C71 John James Audubon, artist | |
| #C72 10¢ 50-star Runway | |
| #C73 10¢ 50-star Runway coil | |
| #C74 10¢ 50th Anniversary of Air Mail | |
| #C75 20¢ USA and Jet | |
| #C76 10¢ First Man on The Moon | |
| #C77 9¢ Silhouette of Delta Wing Plane | |
| #C78 11¢ Silhouette of Jet Airliner | |
| #C79 13¢ Winged Airmail Envelope | |
| #C80 17¢ Statue of Liberty | |
| #C81 21¢ USA and Jet | |
| #C82 11¢ Silhouette of Jet Airliner coil | |
| #C83 13¢ Winged Airmail Envelope coil | |
| #C84 11¢ National Park Centennial | |
| #C85 11¢ Olympic Games | |
| #C86 11¢ Electronic Progress | |
| #C87 18¢ Statue of Liberty | |
| #C88 26¢ Mt. Rushmore | |
| #C89 25¢ Plane and Globes | |
| #C90 31¢ Plane and Globes | |
| #C92a Wright Brothers - Vert Pair Setenant | |
| #C94a Octave Chanute - Vert Pair Setenant | |
| #C96a Wiley Post - Vert Pair Setenant | |
| #C97 31¢ Olympic Games | |
| #C98 Philip Mazzei Issue perf. 11 | |
| #C98A Philip Mazzei Issue perf. 10½x11¼ * | |
| #C99 Blanche Stuart Scott Issue | |
| #C100 Glenn Curtiss Issue | |
| #C104a Summer Olympics 1984 - Setenant | |
| #C108b Summer Olympics 1984 - Setenant | |
| #C112a Summer Olympics 1984 - Setenant | |
| #C113 Alfred V. Verville Issue | |
| #C114 Lawrence & Elmer Sperry Issue | |
| #C115 Transpacific Airmail Anniversary | |
| #C116 Father Junipero Serra Issue | |
| #C117 Settling of New Sweden | |
| #C118 Samuel P. Langley Issue | |
| #C119 Igor Sikorsky Issue | |
| #C120 French Revolution Bicentennial | |
| #C121 Pre-Columbian America Issue | |
| #125a Futuristic Mail Delivery - Setenant | |
| #C126 Futuristic Mail Delivery -Souvenir Sheet | |
| #C127 Pre-Columbian America Issue | |
| #C128 Harriet Quimby Issue | |
| #C129 William T. Piper Issue perf. 11 | |
| #C130 Antarctic Treaty Issue | |
| #C131 Pre-Columbian America Issue | |
| #C132 William T. Piper Issue perf. 11.2 | |