139-73.74.B Envelope and stamp First Launch Cover issued by U.S. Postal Service with First Mailgram Message sent via Satellite Western Union Mailgram Transmitted via Westar 1 Date September 1 1974
-Image from the SDASM Curatorial Collection. ---Note: This material may be protected by Copyright Law (Title 17 U.S.C.)--Repository: San Diego Air and Space Museum