I highly recommend a book called Season of the Witch by David Talbot. It's a great history of SF in the 50s-80s with a strong focus on the 60s and the countercu

I highly recommend a book called Season of the Witch by David Talbot. It's a great history of SF in the 50s-80s with a strong focus on the 60s and the counterculture. It's some amazing history that many people don't know much about. If the 60s counterculture and the rest of America had been geographically segregated like the South and the North in the 1860s, you'd have had secession and civil war.