| B |
Barstow, California (location of the Goldstone Tracking Station) |
| C |
Cape Canaveral, Florida |
| CB |
Cocoa Beach, Florida |
| DC |
District of Columbia - Washington DC |
| E |
Edwards Air Force Base, California |
| EG |
Eglin Air Force Base, Florida |
| F |
Foreign cancelled cover |
| GB |
Greenbelt Maryland (location of the Goddard Space Flight Center) |
| H |
Houston Texas (location of the Johnson Space Craft Center) |
| HL |
Holloman Air Force Base, New Mexico |
| HN |
Hampton-Newport-News, Virginia |
| HU |
Hunstville, Alabama |
| K |
Kennedy Space Center, Florida |
| L |
Lompoc, California |
| M |
Marshall Space Flight Center, Huntsville Alabama |
| MF |
Moffett Field California (location of the Ames Research Center) |
| MI |
Merritt Island Florida |
| MV |
Mountain View California (location of the Ames Laboratory) |
| P |
Patrick Air Force Base, Florida |
| PA |
Pasadena California (location of the Jet Propulsion Laboratory) |
| PC |
Port Canaveral, Florida |
| PL |
Palestine, Texas (location of NCAR, National Center for Atmospheric Research) |
| SB |
Satellite Beach Florida (located near Cape Canaveral/Kennedy Space Center Area) |
| T |
Astronaut Trail Station, Titusville, Florida (location in Cape Canaveral/Kennedy Space Center Area) |
| UN |
United Nations, New York |
| V |
Vandenberg Air Force Base, California |
| WI |
Wallops Island, Virginia |
| WP |
Wapakoneta, Ohio |
| WS |
White Sands Missile Range, New Mexico |