Organizations not related to ASTP
I had no intention to collect covers from unrelated organizations, but they just appeared in my collection. So I present them in a separate section. Observatories, museums, institutions, etc.
I will also include here the covers commemorating the events that are part of US-USSR cooperation in space but not directly related to ASTP.
Cosmos-782 launch on Nov 25, 1975 SV-CS-1974-T1-blue
letter from Dr. Norman Ness to Shmaya Dolginov of USSR Academy of Science. Both were involved in the extraterrestrial physics research.
San Jose, CA