I missed that connection in the "Electric Kool-Aid Acid Test", but then its been a long minute since I read Kesey's book. I only knew of the Jim Jones Peoples' Temple reference.

In the minutiae department, I've handled calls out at Ken Kesey's property a few times. The family still runs (I think) concert promotions etc. There's a statue in downtown Eugene depicting Ken Kesey on a bench, reading to his grandkids. His son Jed Kesey was killed in a van crash involving the U of O wrestling team in 1984.