Canyon concept

Canyon-series
satellites


This page contains philatelic information on Canyon-series satellites. Catalog numbers, years of issue, and notes on the satellites featured are given when available. If readers know of additional information or images, please contact the authors using the e-mail addresses at the bottom of this page.

Launch information
(found elsewhere)
Launch covers
(including anniversary-of-launch covers, and launch-related event covers)
(farther below)
Other postal items
(stamps, souvenir sheets, aerogrammes, postal cards, etc.)
(immediately below)
Canyon (USAF) Canyon (USAF) Canyon (USAF)


Below is a list of Canyon-series satellite postal items (stamps, souvenir sheets, aerogrammes, postal cards, etc.).

CountryCatalog NumberType of ItemYear of IssueNotes on Content
Canyon (USAF)
No (non-launch cover) postal items found


Below is a list of Canyon-series satellite launch covers (including anniversary-of-launch covers, and launch-related event covers).

CountryCancel DateCancel LocationType of ItemNotes on Content
Canyon (USAF)
1968-08-06: Canyon-1
United States1968-08-06Cape Canaveral FL (machine cancel)(SpaceCraft/Swanson) cachet on coverCanyon-1 launch ("spy satellite")
United States1968-08-06Cape Canaveral FL (hand cancel)(SpaceCraft/Swanson) cachet (and signature) on coverCanyon-1 launch ("spy satellite")
United States1968-08-06Cape Canaveral FL(Orbit Covers) cachet on coverCanyon-1 launch ("spy in the sky")
United States1968-08-06Cape Canaveral FL(Astro Covers, no logo) cachet on coverCanyon-1 launch ("spy-in-sky satellite")
United States1968-08-06Cape Canaveral FL(Centennial) cachet on coverCanyon-1 launch ("secret spy-in-sky satellite")
1969-04-13: Canyon-2
No launch cover images available yet
1970-09-01: Canyon-3
United States1970-09-01Cape Canaveral FL(Orbit Covers) cachet on coverCanyon-3 launch ("spy in the sky")
United States1970-09-01Cape Canaveral FL(C. Swanson purple and red and black rubber-stamp) cachet on coverCanyon-3 launch ("secret spy in the sky")
1971-12-04: Canyon-4 [failed]
United States1971-12-05Kennedy Space Center FL(Space Voyage) cachet on coverCanyon-4 launch [failed] ("super spy"; not "MIDAS", as in text)
United States1971-12-05Cape Canaveral FL(Centennial) cachet on coverCanyon-4 launch [failed] ("secret spy satellite")
United States1971-12-05Cape Canaveral FL(Whitney orange and purple) cachet on coverCanyon-4 launch [failed]
United States1971-12-06Kennedy Space Center FL(Centennial) cachet (same) on coverCanyon-4 launch [failed] ("secret spy satellite")
1972-12-20: Canyon-5
United States1972-12-20Kennedy Space Center FL(Riser/Andromeda/Cygnus Cover no.43) cachet on (airmail) coverCanyon-5 launch ("secret program 313" in text; not "SDS", as in text; also "MIDAS" and "SAMOS" in text)
United States1972-12-20Kennedy Space Center FL(Space Voyage) cachet on coverCanyon-5 launch ("program 313" and "super spies" in text; also "MIDAS" in text)
United States1972-12-21Cape Canaveral FL(Orbit Covers) cachet on coverCanyon-5 launch ("spy in the sky" and "Satellite 647")
1975-06-18: Canyon-6
United States1975-06-18Kennedy Space Center FL(SCPS) cachet on coverCanyon-6 launch ("secret payload", "spysat", and "supersecret spy satellite")
1977-05-23: Canyon-7
United States1977-05-23Kennedy Space Center FL(SCPS) cachet on coverCanyon-7 launch ("classified payload" and "spy probe")
United States1977-05-23Kennedy Space Center FL(Space Voyage) cachet on coverCanyon-7 launch ("secret satellite")
United States1977-05-23Vandenberg AFB, CA(DuBeau? red rubber-stamp) cachet on coverCanyon-7 launch ("spy sky...satellite")


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Updated: 2018-05-07