The series aired on KPFA (Berkeley) and KPFK (Los Angeles) from 1963 to 1967, on an irregular schedule.
Bauersfeld's sound designer for most of the episodes was John Whiting, KPFA's production director.
[2] Their collaborations were later credited in a Ph.D. dissertation with "keeping radio drama alive in America in the 1960s."
Bauersfeld's Black Mass productions were an influence on writer-producer Thomas Lopez (ZBS), who noted, "In the 1960s, I was inspired by someone at KPFA in Berkeley, Eric Bauersfeld, who did a series called The Black Mass, adaptations of H. P. Lovecraft and such.
Except as noted, these are in the Pacifica Radio Archives and on the Official Black Mass site: The following are listed from KPFA, KPFK or KQED airchecks, not the Pacifica Archives: Great American Scream - KPFK: