| | | Number | Denomination | Description | Perforation |
 |
 | C1 | 6c | Curtiss Jenny | 11 |
|
 | C2 | 16c | Curtiss Jenny | 11 |
|
 | C3 | 24c | Curtiss Jenny | 11 |
|
 | C3a | 24c | Inverted | 11 |
|
 | C4 | 8c | Radiator and Propeller | 11 |
|
 | C5 | 16c | Airmail Service Insignia | 11 |
|
 | C6 | 24c | De Havilland Plane | 11 |
|
 | C7 | 10c | U.S. Map and Mail Planes | 11 |
|
 | C8 | 15c | U. S. Map and Mail Planes | 11 |
|
 | C9 | 20c | U. S. Map and Mail Planes | 11 |
|
 | C10 | 10c | Spirit Of St Louis and Flight Route | 11 |
|
 | C10a | 10c | Spirit of St. Louis pane of 3 | 11 |
|
 | C11 | 5c | Beacon on the Rocky Mountains | 11 |
|
 | C12 | 5c | Winged Globe | 11 |
|
 | C13 | 65c | Graf Zeppelin | 11 |
|
 | C14 | $1.30 | Graf Zeppelin | 11 |
|
 | C15 | $2.60 | Graf Zeppelin | 11 |
|
 | C16 | 5c | Winged Globe | 10½ x 11 |
|
 | C17 | 8c | Winged Globe | 10½ x 11 |
|
 | C18 | 50c | Century Of Progress | 11 |
|
 | C19 | 6c | Winged Globe | 10½ x 11 |
|
 | C20 | 25c | Century of Progress | 11 |
|
 | C21 | 20c | Century of Progress | 11 |
|
 | C22 | 50c | Century of Progress | 11 |
|
 | C23 | 6c | Century of Progress | 11 |
|
 | C24 | 30c | Winged Globe | 11 |
|
 | C25 | 6c | Twin-motored Transport Plane | 11x10½ |
|
 | C25a | 6c | Twin Motored Transport Plane | 11 x 10½ |
|
 | C26 | 8c | Twin-motored Transport Plane | 11x10½ |
|
 | C27 | 10c | Twin-motored Transport Plane | 11 x 10½ |
|
 | C28 | 15c | Twin-motored Transport Plane | 11 x 10½ |
|
 | C29 | 20c | Twin-motored Transport Plane | 11 x 10½ |
|
 | C30 | 30c | Twin-motored Transport Plane | 11 x 10½ |
|
 | C31 | 50c | Twin-motored Transport Plane | 11 x 10½ |
|
 | C32 | 5c | DC-4 Skymaster | 11 x 10½ |
|
 | C33 | 5c | DC-4 Skymaster | 10½ x 11 |
|
 | C34 | 10c | Pan American Union Building | 11 x 10½ |
|
 | C35 | 15c | Statue Of Liberty, New York Skyline | 11 x 10½ |
|
 | C36 | 25c | San Francisco-Oakland Bay Bridge | 11 x 10½ |
|
 | C37 | 5c | DC-4, Skymaster | 10 Horz. |
|
 | C38 | 5c | Map of Five Boroughs | 11 x 10½ |
|
 | C39 | 6c | DC-4, Skymaster | 10½ x 11 |
|
 | C39a | 6c | DC-4 Skymaster | 10½ x 11 |
|
 | C40 | 6c | Home of John Carlyle, Alexandria Seal, Gadsby's Tavern | 11x10½ |
|
 | C41 | 6c | DC-4, Skymaster | 10 Horz. |
|
 | C42 | 10c | Post Office Department Building | 11 x 10½ |
|
 | C43 | 15c | Globe and Doves Carrying Messages | 11 x 10½ |
|
 | C44 | 25c | Boeing Stratocruiser | 11 x 10½ |
|
 | C45 | 6c | Wilbur and Orville Wright and their plane | 11x10½ |
|
 | C46 | 80c | Diamond Head | 11 x 10½ |
|
 | C47 | 6c | Powered Flight | 11 x 10½ |
|
 | C48 | 4c | Eagle | 11 x 10½ |
|
 | C49 | 6c | B-52 Superfortress and F-104 Starfighters | 11 x 10½ |
|
 | C50 | 5c | Eagle In Flight | 11 x 10½ |
|
 | C51 | 7c | Silhouette Of Jet Airliner | 10½x11 |
|
 | C51a | 7c | Silhouette Of Jet Airliner | 11 x 10½ |
|
 | C52 | 7c | Silhouette Of Jet Airliner | 10 Horiz. |
|
 | C53 | 7c | Alaska Statehood | 11 x 10½ |
|
 | C54 | 7c | Ballon Jupiter | 11 |
|
 | C55 | 7c | Alii Warrior, Map of Hawaii, and Star of Statehood | 11 x 10½ |
|
 | C56 | 10c | Pan Am Games | 11 |
|
 | C57 | 10c | Liberty Bell | 11 |
|
 | C58 | 15c | Statue Of Liberty | 11 |
|
 | C59 | 25c | Abraham Lincoln | 11 |
|
 | C60 | 7c | Silhouette Of Jet Airliner | 10½x11 |
|
 | C60a | 7c | Silhouette Of Jet Airliner | 10½ x 11 |
|
 | C61 | 7c | Silhouette Of Jet Airliner | 10 Horiz. |
|
 | C62 | 13c | Liberty Bell | 11 |
|
 | C63 | 15c | Statue Of Liberty | 11 |
|
 | C64 | 8c | Jet Airliner Over Capitol | 10½x11 |
|
 | C64a | 8c | Jet Airliner Over Capitol | 10½ x 11 |
|
 | C64b | 8c | Jet Airliner Over Capitol | 10½ x 11 |
|
 | C65 | 8c | Jet Airliner Over Capitol | 10 Horiz. |
|
 | C65a | 8c | Jet Airliner Over Capitol | 10 Horiz. |
|
 | C66 | 15c | Montgomery Blair | 11 |
|
 | C67 | 6c | Bald Eagle | 11x10½ |
|
 | C67a | 6c | Bald Eagle | 11 x 10½ |
|
 | C68 | 8c | Amelia Earhart and Lockheed Electra | 11 |
|
 | C69 | 8c | Robert H. Goddard | 11 |
|
 | C70 | 8c | Alaska Purchase | 11 |
|
 | C71 | 20c | Columbia Jays by John James Audubon | 11 |
|
 | C71a | 20c | Columbia Jays | 11 |
|
 | C72 | 10c | 50-Star Runway | 11 x 10½ |
|
 | C72b | 10c | 50-Star Runway Booklet sigmle from page of 8 | 11 x 10½ |
|
 | C73 | 10c | 50 Star Runway | 10 Vert. |
|
 | C74 | 10c | Curtiss Jenny | 11 |
|
 | C75 | 20c | "USA" and Jet | 11 |
|
 | C76 | 10c | First Man On Moon | 11 |
|
 | C77 | 9c | Delta Wing | 10½ x 11 |
|
 | C78 | 11c | Silhouette of Jet Airliner | 11 x 10½ |
|
 | C78a | 11c | Silhouette of Jet Airliner | 11 x 10½ |
|
 | C78b | 11c | Silhouette of Jet Airliner | 11 x 10½ |
|
 | C79 | 13c | Winged Airmail Envelope | 11x10½ |
|
 | C79a | 13c | Winged Letter | 11 x 10½ |
|
 | C79b | 13c | Winged Letter | 11 x 10½ |
|
 | C80 | 17c | Statue Of Liberty | 11 |
|
 | C81 | 21c | "USA" and Jet | 11 |
|
 | C82 | 11c | Silhouette of Jet Airliner | 10 Vert. |
|
 | C83 | 13c | Winged Airmail Envelope | 10 Vert. |
|
 | C84 | 11c | City of Refuge, Hawaii | 11 |
|
 | C85 | 11c | 1972 Winter Olympics: Skiing and Olympic Rings | 11 x 10½ |
|
 | C86 | 11c | De Forest Audions | 11 |
|
 | C87 | 18c | Statue Of Liberty | 11 |
|
 | C88 | 26c | Mt. Rushmore National Memorial | 11 |
|
 | C89 | 25c | Plane and Globes | 11 |
|
 | C90 | 31c | Plane, Globes and Flags | 11 |
|
 | C91 | 31c | Orville and Wilbur Wright | 11 |
|
 | C92 | 31c | Orville and Wilbur Wright | 11 |
|
 | C93 | 21c | Octave Chanuye | 11 |
|
 | C94 | 21c | Octave Chanuye | 11 |
|
 | C95 | 25c | Wiley Post | 11 |
|
 | C96 | 25c | Wiley Post | 11 |
|
 | C97 | 31c | 1980 Olympics: High Jump | 11 |
|
 | C98 | 40c | Phillip Mazzei | 11 |
|
 | C98A | 40c | Phillip Mazzei | 10½x11¼ |
|
 | C99 | 28c | Blanche Stuart Scott | 11 |
|
 | C99a | 28c | Blanche Scott | Imperforated |
|
 | C100 | 35c | Glenn Curtiss Aviation Pioneer and Aircraft Designer | 11 |
|
 | C101 | 28c | Women's Gymnastics | 11 |
|
 | C102 | 28c | Hurdles | 11 |
|
 | C103 | 28c | Woman's Basketball | 11 |
|
 | C104 | 28c | Soccer | 11 |
|
 | C105 | 40c | Summer Olympics 1984: Shot Put | 11.2 Bullseye |
|
 | C106 | 40c | Summer Olympics 1984: Men's Gymnastics | 11.2 Bullseye |
|
 | C107 | 40c | Summer Olympics 1984: Women's Swimming | 11.2 Bullseye |
|
 | C108 | 40c | Summer Olympics 1984: Weight Lifting | 11.2 Bullseye |
|
 | C109 | 35c | Women's Fencing | 11 |
|
 | C110 | 35c | Cycling | 11 |
|
 | C111 | 35c | Women's Volleyball | 11 |
|
 | C112 | 35c | Pole Vaulting | 11 |
|
 | C113 | 33c | Alfred Verville | 11 |
|
 | C114 | 39c | Lawrence and Elmer Sperry | 11 |
|
 | C115 | 44c | Transpacific Airmail, 50th Anniversary | 11 |
|
 | C116 | 44c | Junipero Serra | 11 |
|
 | C117 | 44c | Settler, Two indians, Mapof New Sweden, Swedish Ships "Kalmar Nyckel" and "Fogel Grip" | 11 |
|
 | C118 | 45c | Samuel P. Langley | 11 |
|
 | C118a | 45c | Samuel P. Langley and Unmanned Aerodrome | 11 |
|
 | C119 | 36c | Igor Sikorsky | 11 |
|
 | C120 | 45c | French Revolution Bicentennial | 11½ x 11 |
|
 | C121 | 45c | Southeast Carved Figure | 11 |
|
 | C122 | 45c | Hypersonic Airliner | 11 |
|
 | C123 | 45c | Air-Cushion Vehicle | 11 |
|
 | C124 | 45c | Future Mail: Moon Rover | 11 |
|
 | C125 | 45c | Future Mail: Space Shuttle | 11 |
|
 | C126 | 45c | Futuristic Mail Delivery | Imperforated |
|
 | C127 | 45c | Tropical Coast | 11 |
|
 | C128 | 50c | Harriet Quimby | 11 |
|
 | C128b | 50c | William Piper | 11.2 |
|
 | C129 | 40c | William Piper | 11 |
|
 | C130 | 50c | Antarctic Treaty, McMurdo Sound | 11 |
|
 | C131 | 50c | Bering Land Bridge | 11 |
|
 | C132 | 40c | William Piper | 11.2 |
|
 | C133 | 48c | Scenic American Landscapes: Niagara Falls | 11 |
|
 | C134 | 40c | Rio Grande | 11 SDC |
|
 | C135 | 60c | Scenic American Landscapes: Grand Canyon | 11¼ x 11½ SDC |
|
 | C136 | 70c | Scenic American Landscapes: Nine-Mile Prairie, Nebraska | 11¼ x 11½ SDC |
|
 | C137 | 80c | Scenic American Landscapes: Mount McKinley | 11 SDC |
|
 | C138 | 60c | Scenic American Landscapes: Acadia National Park Maine | 11¼ x 11½ SDC |
|
 | C139 | 63c | Bryce Canyon National Park, Utah - Pane single | SDC 10¾ |
|
 | C140 | 75c | Great Smoky Mountains National Park, NC and TN - Pane single | SDC 10¾ |
|
 | C141 | 84c | Yosemite National Park, CA - Pane single | SDC 11.0 |
|
 | C142 | 69c | Okefenokee Swamp, Georgia/Florida - Pane Single | SDC 10¾ |
|
 | C143 | 90c | Hagåtña Bay, Guam - Pane Single | SDC 11.0 |
|
 | C144 | 72c | Scenic American Landscapes: Thirteen Mile Woods, New Hampshire | 10¾ |
|
 | C145 | 94c | Scenic American Landscapes: St. John, US Virgin Islands, Trunk Bay | 11 SDC |
|
 | C146 | 79c | Scenic American Landscapes: Zion National Park | 10¾ SDC |
|
 | C147 | 98c | Scenic American Landscapes: Grand Teton National Park | 10¾ SDC |
|
Thumbnail | C148 | 80c | Voyageurs National Park | 10¾ SDC |
|
Thumbnail | C149 | 85c | Glacier National Park | 10¾ SDC |
|
Thumbnail | C150 | $1.05 | Lancaster County, PA | 10¾ SDC |
|
 | CE1 | 16c | Great Seal of the United States | 11 |
|
 | CE2 | 16c | Great Seal of the United States | 11 |