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(all known) covers with
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| HJM satellite border | HJM submarine border |
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(all known) covers with
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| HJM satellite border | HJM submarine border |
This page contains (all known) covers with "HJM" cachets produced by Hans J. Mueller to mark satellite launches and other space-related events. Those covers include this "HJM" logo on the front lower-right. Most of the covers listed below have an HJM printed border which depicts three satellites of interest to the authors, with the following detail images: "Explorer"-10 (upper-middle), "Mariner"-1/2 type (upper-left), and "Syncom" (left-side). (The authors' web pages for these three satellites are found here: Explorer, Mariner, and Syncom.) The HJM printed cachet is available in three colors: black, blue, blue-green, and cyan.
Most of the postal items listed below are also found in other pages of the Un-manned Satellite Philately website. However, below are also a few items not found elsewhere in the website because they are not of direct interest to the authors. They are nevertheless included here to make this list of named covers more complete. Such items are highlighted in blue.
A few HJM nuclear submarine mail covers have been found, different from all the other HJM cachets. Those covers, which were for submarine-related events, are marked with green highlighting. A few more covers with HJM submarine-related cachets may exist.
Readers who know of additional information or images are invited to contact the authors using the e-mail addresses found at the link at the bottom of this page.
Below is a list of "HJM" cachets on launch covers (including anniversary-of-launch covers, and launch-related event covers).
| Country | Cancel Date | Cancel Location | Type of Item | Notes on Content |
|---|---|---|---|---|
| HJM-like cachets | ||||
| United States | 1964-07-27 | Houston TX | (TD Productions/HJM-like) cachet on cover, also annotated | Gemini-4 pre-launch: (but "Pioneer"-6/7/8/9 type, "TIROS", "Telstar"-1/2, and "Syncom"-1/2/3 type depicted) |
| "HJM" cachets | ||||
| United States | 1964-10-09 | Wallops Island VA | (HJM black and Swanson green and magenta rubber-stamp) cachet on cover | Scout RFD-2 re-entry vehicle test flight |
| United States | 1964-11-28 | Cape Canaveral FL | (HJM cyan and Jim Fitzpatrick purple rubber-stamp) cachet on cover | Mariner-4 launch |
| Antigua | 1965-03-23 | St. Johns | (HJM black and cyan and magenta rubber-stamp) cachet on cover | Gemini-3 launch |
| United States | 1965-03-23 | Canton Island, Phoenix Group | (HJM black and black and magenta rubber-stamp) cachet (and signature) on cover | Gemini-3 launch |
| United States | 1965-05-18 | WSMR, NM | (HJM black and Boudwin? black rubber-stamp) cachets on cover | ARCAS (sub-orbital) rocket launch |
| United States | 1965-06-03 | USS Robert A. Owens | (HJM black and US Navy magenta rubber-stamp) cachet on cover | Gemini-4 launch |
| United States | 1965-06-03 | Jackson MI (cancel) | (HJM black) cachet on cover | Gemini-4 launch |
| United States | 1965-06-03 | Las Cruces NM, WSMR Branch | (HJM purple and WSMR purple rubber-stamp) cachet on cover | Gemini-4 launch |
| United States | 1965-06-07 | Jackson MI (meter) | (HJM blue) cachet on cover | Gemini-4 splashdown/recovery |
| United States | 1965-06-07 | USS Ponchatoula | (HJM black and US Navy magenta rubber-stamp) cachet on cover, also back | Gemini-4 splashdown/recovery |
| United States | 1965-08-21 | Kennedy Space Center FL | (HJM black and purple rubber-stamp) cachet on cover | Gemini-5 (and REP) launch |
| United States | 1965-08-29 | USS Neosho | (HJM black and US Navy black rubber-stamp) cachet on cover | Gemini-5 spashdown/recovery |
| United States | 1965-08-29 | USS Chipola | (HJM black and US Navy purple rubber-stamp) cachet on cover, also back | |
| United States | 1965-09-09 | Vandenberg AFB, CA | (HJM black and Swanson/DuBeau? black rubber-stamp) cachet on cover | DSAP-2-F1 launch |
| United States | 1965-09-22 | Vandenberg AFB, CA | (HJM black and Swanson/DuBeau? black rubber-stamp) cachet on cover | KH4A-24 launch |
| United States | 1965-09-30 | Vandenberg AFB, CA | (HJM black and Swanson/DuBeau? red and blue rubber-stamp) cachet on cover | KH7-22 launch |
| United States | 1965-10-05 | Vandenberg AFB, CA | (HJM black and Swanson/DuBeau? blue rubber-stamp) cachet on cover | OV1-2 launch |
| United States | 1965-10-13 | Edwards CA | (HJM black and blue rubber-stamp) cachet (and signature) on cover | X-15 test flight |
| United States | 1965-10-15 | Cape Canaveral FL | (HJM black and Swanson/DuBeau? blue rubber-stamp) cachet on cover | OV2-1 and LCS-2 launch [failed] |
| United States | 1965-10-21 | Wallops Island VA | (HJM black and Swanson blue/Hudson magenta rubber-stamp) cachet on cover | Aerobee-150A (sub-orbital) rocket launch |
| United States | 1965-10-25 | USS Borie | (HJM black and US Navy black rubber-stamp) cachet on cover | GATV-6 launch [failed] |
| United States | 1965-11-03 | Edwards CA | (HJM black and blue rubber-stamp) cachet on cover | X-15 test flight |
| United States | 1965-11-19 | Wallops Island VA | (HJM black and Swanson blue and magenta rubber-stamp) cachet on cover | Explorer-30 (SolRad-8) launch |
| United States | 1965-11-30 | Vandenberg AFB, CA | (HJM black and Swanson magenta and blue rubber-stamp) cachet on cover | Titan-2 (sub-orbital) rocket launch |
| United States | 1965-12-04 | Cape Canaveral FL | (HJM black and black rubber-stamp) cachet on cover | Gemini-7 launch |
| United States | 1965-12-04 | Vandenberg AFB, CA | (HJM black and blue and magenta rubber-stamp) cachet on cover | Gemini-7 launch |
| United States | 1965-12-06 | WSMR, NM | (HJM black and Boudwin? purple and blue rubber-stamp) cachets on cover | Gemini-7 event |
| Antigua | 1965-12-07 | St. John's | (HJM black and black rubber-stamp) cachet on cover | Gemini-7 event |
| United States | 1965-12-15 | Cape Canaveral FL | (HJM black and blue rubber-stamp) cachet on cover | Gemini-6A launch |
| Ascension Island | 1965-12-16 | Ascension | (HJM black and black and purple rubber-stamp) cachet (and signature) on cover | Gemini-6A tracking |
| United States | 1965-12-16 | USS Cochrane | (HJM black and US Navy magenta rubber-stamp (on back)) cachet on cover, also back | Gemini-6A splashdown/recovery |
| United States | 1965-12-16 | USS Cochrane | (HJM black and US Navy magenta rubber-stamp) cachet on cover | Gemini-6A splashdown/recovery |
| United States | 1965-12-16 | USS Renshaw | (HJM black and US Navy magenta rubber-stamp (on back)) cachet on cover, also back | Gemini-6A splashdown/recovery |
| United States | 1965-12-16 | USS Ponchatoula | (HJM black and US Navy magenta rubber-stamp) cachet on cover | Gemini-6A splashdown/recovery |
| United States | 1965-12-16 | USS George K. Mackenzie | (HJM black and US Navy magenta rubber-stamp) cachet on cover | Gemini-6A splashdown/recovery |
| United States | 1965-12-16 | USS Wasp | (HJM black and US Navy magenta rubber-stamp) cachet on cover | Gemini-6A splashdown/recovery |
| United States | 1965-12-17 | USS Rupertus | (HJM black and US Navy magenta rubber-stamp) cachet on cover | Gemini-6A splashdown/recovery |
| United States | 1965-12-18 | USS Cochrane | (HJM black and US Navy magenta rubber-stamp) cachet on cover | Gemini-7 spashdown/recovery |
| United States | 1966-02-03 | Cape Canaveral FL | (HJM black) cachet on cover | ESSA-1 launch |
| Turks and Caicos Islands | 1966-03-16 | Grand Turk | (HJM black and circular black rubber-stamp) cachet (and signatures) on cover | GATV-8 launch |
| United States | 1966-04-07 | Cape Canaveral FL | (HJM [submarine-mail] purple and black rubber-stamp) cachet on cover | USS George Bancroft 1st missile launch |
| United States | 1966-04-08 | Cape Canaveral FL | (HJM black and Swanson/DuBeau? purple rubber-stamp) cachet on cover | OAO-1 launch |
| United States | 1966-04-08 1966-04-08 | Cape Canaveral FL (hand cancel) Cape Canaveral FL (machine cancel) | (HJM black and black typed) cachet on cover | Surveyor-SD3 launch |
| United States | 1966-04-14 | Cape Canaveral FL | (HJM [submarine-mail] blue and black and magenta rubber-stamp) cachet on cover | USS George Washington Polaris-A3 operational test |
| United States | 1966-05-12 | Edwards CA | (HJM blue and black and blue rubber-stamp) cachet (and signature) on cover | LLRV test |
| United States | 1966-05-16 | Edwards CA | (HJM black and blue rubber-stamp) cachet (and signatures) on cover | B-70 test flight |
| United States | 1966-06-03 | Cape Canaveral FL | (HJM black and purple rubber-stamp) cachet on cover | Gemini-9A launch |
| United States | 1966-06-03 | Corpus Christi TX | (HJM cyan and black rubber-stamp) cachet on cover | |
| United States | 1966-06-05? | Mare Island CA? | (HJM [submarine-mail] blue and unknown-color rubber-stamp) cachet on cover | USS Robert E. Lee sea trials |
| United States | 1966-06-07 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | OGO-3 launch |
| United States | 1966-06-16 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | GGTS-1 and IDCSP-1/7 launch |
| United States | 1966-07-05 | Cape Canaveral FL | (HJM black) cachet on cover | Apollo-Saturn AS-203 launch |
| United States | 1966-08-10 | Cape Canaveral FL | (HJM black) cachet on cover | Lunar Orbiter-1 launch |
| United States | 1966-08-17 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | Pioneer-7 launch |
| United States | 1966-08-26 | Cape Canaveral FL | (HJM blue and Swanson purple rubber-stamp) cachets on cover | GGTS-2 and IDCSP-8/14 launch [failed] |
| United States | 1966-08-26 | Wallops Island VA | (HJM blue and Swanson cyan and magenta rubber-stamp) cachet on cover | Nike-Tomahawk (sub-orbital) rocket launch |
| United States | 1966-08-30 | Edwards CA | (HJM cyan and blue rubber-stamp) cachet (and signatures) on cover | LLRV test flight |
| United States | 1966-09-14 | Edwards CA | (HJM blue-green and blue rubber-stamp) cachet on cover | X-15 test flight |
| United States | 1966-10-27 | Cape Canaveral FL | (HJM blue and Swanson purple rubber-stamp) cachets on cover | Blue Bird (Intelsat-2-1) launch [partial failure] |
| United States | 1966-11-11 | Cape Canaveral FL | (HJM black and purple rubber-stamp) cachet on cover | GATV-12 (and Gemini-12) launch |
| United States | 1966-12-07 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | ATS-1 launch |
| United States | 1966-12-07 | Cape Canaveral FL | (HJM blue-green and Swanson purple rubber-stamp) cachet on cover | ATS-1 launch |
| United States | 1966-12-10 | Wallops Island VA | (HJM cyan and Swanson green rubber-stamp) cachet on cover | Scanner (sub-orbital) rocket launch |
| United States | 1967-01-11 | Cape Canaveral FL | (HJM blue-green and Swanson blue rubber-stamp) cachets on cover | Intelsat-2-2 launch |
| United States | 1967-01-18 | Cape Canaveral FL | (HJM blue and Swanson purple rubber-stamp) cachets on cover | IDCSP-8/15 launch |
| United States | 1967-03-08 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | OSO-3 launch |
| United States | 1967-04-06 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | ATS-2 launch |
| United States | 1967-04-06 | Patrick AFB, FL | (HJM blue and Swanson purple rubber-stamp) cachets on cover | ATS-2 launch |
| United States | 1967-04-20 | Vandenberg AFB, CA | (HJM blue-green and Vandy?/DuBeau? blue rubber-stamp) cachets on cover | ESSA-5 launch |
| United States | 1967-06-22 | Edwards CA | (HJM blue-green and blue rubber-stamp) cachet on cover | X-15 test flight |
| United States | 1967-07-19 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | Explorer-35 launch |
| United States | 1967-10-18 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | OSO-4 launch |
| United States | 1967-11-06 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | ATS-3 launch |
| United States | 1968-03-04 | Cape Canaveral FL | (HJM black and black typed) cachet on cover | OGO-5 launch |
| United States | 1968-08-10 | Patrick AFB, FL | (HJM blue and Whitney blue and green) cachets on cover | ATS-4 launch [partial failure] |
| United States | 1968-09-19 | Cape Canaveral FL | (HJM blue and Whitney cyan and purple and magenta) cachets on cover | Intelsat-3-1 launch [failed] |
| United States | 1968-09-26 | Cape Canaveral FL | (HJM black and red typed) cachet on cover | LES-6 and OV2-5 and OV5-2/4 launch |
| United States | 1968-12-07 | Cape Canaveral FL | (HJM black and red typed) cachet on cover | OAO-2 launch |
| United States | 1969-01-22 | Cape Canaveral FL | (HJM black and red typed) cachet on cover | OSO-5 launch |
| United States | 1969-02-26 | Cape Canaveral FL | (HJM black and red typed) cachet on cover | ESSA-9 launch |
| United States | 1969-05-22 | Cape Canaveral FL | (HJM blue-green and Whitney red and black) cachet on cover | Intelsat-3-4 launch |
| United States | 1969-07-24 | USS Zark | (HJM black and US Navy magenta rubber-stamp) cachet on cover | Apollo-ll splashdown/recovery |
| United States | 1969-07-24 | USS Hornet | (HJM-like black printed sticker, with no logo) cachet on cover | Apollo-ll splashdown/recovery; (possible HJM cachet by the Saturn rocket drawing and the NASA logo, which are identical to what is found in many other HJM covers, as well as the address to H. Mueller, the cachet maker behind the HJM covers) |
| United States | 1969-07-26 2004-03-29 | Cape Canaveral FL (machine cancel) Cape Canaveral FL (hand cancel) | (HJM blue-green and Whitney purple and black) cachet on cover | Intelsat-3-5 launch [partial failure] |
| United States | 1971-02-01 | Agana, Guam | (HJM black and black rubber-stamp) cachet (and signature) on cover | Apollo-l4 launch |
| United States | 1974-02-08 | Kennedy Space Center FL | (HJM black and blue rubber-stamp) cachet on cover | Skylab-4 end of mission |
| United States | 1978-09-27 | Seattle WA | (Red rubber-stamp and hand-printed) cachet on cover | Pisces-VI submersible dive |
| United States | 1980-07-24 | Sitka AK | (Red and black rubber-stamp and hand-printed) cachet on cover | Project Sea Sub submersible dive |
| United States | 1982-01-08 | Honolulu HI | (Blue rubber-stamp and hand-printed) cachet on cover | Makali'i submersible dive |
| United States | 1982-08-12 | Groton CT | (Magenta rubber-stamp) cachet on cover | NR-1 submersible dive |
| United States | 1982-09-18 1983-10-01 | Groton CT (machine cancel) Portsmouth NM Naval Base Branch (hand cancel) | (HJM [submarine-mail] blue cachet on cover | USS Portsmouth launch and commissioning |
| Summary: This list includes more than 40 covers produced from 1964 thru 1969, with a few much later exceptions | ||||
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![HJM [submarine-mail] purple](HJM_submarine-mail_purple_cachet.jpg){kind=link}
![HJM [submarine-mail] blue](HJM_submarine-mail_blue_cachet.jpg){kind=link}
