I would love to take on such a project, given that I am now graduated. However, it's a matter of funding such a project that would be a difficult sell for many departments.
H-Hoac is the H-Net network for Historians of American Communism.
In May 1955, the FBI produced an internal training monograph for its Agents regarding CPUSA membership from 1919 to 1954.
The discussion of CPUSA membership after the Pact reminds me that it would be a nice project for someone to bring together documents or citations to documents that provide reliable numbers of CPUSA membership by year.
We have all sorts of estimates from the origins of the party to the 60s and 70s, but my impression is that for many years these are just estimates, educated and sometimes no-so-educated guesses based on limited or no ducumentation.
RTsKhIDNI and RGASPI are the same archive. It was just a name change.
RTsKhIDNI documents were transferred to RGASPI 20 years ago.