This was common knowledge, but it wasn't discussed a great deal because Calvin was part of the group and it might hurt his feelings. Calvin's mother was a noisy, dominating little Greek woman who followed him most everywhere. She told me herself that she went to his college classes, she monitored classes at college with Calvin. Calvin and I became friendly, even though the mother was always with him. He and his mother had a very close relationship which he didn't care for, but he just couldn't get rid of her.
Burns also questions the persistent rumor.
There could have been grudges back in the '60s that continued for a long time, or even resentment that Calvin was the only person of that fan group who was publishing a successful magazine. He may have been the only fan ever to publish a national magazine, at least, one that lasted that many years. And any negative thing you could say about Calvin would stick in people's minds. Mrs. Carter sticks to her guns. It was common knowledge, and it was not something that people surmised.