Here's my first crochet book - "the Peter Max Book of Crochet"!!! I recently bought it on Amazon for nostalgia sake. I won't tell you how much it cost. I simply had to have it!!! I didn't remember the hat at all, which is odd when you look at what I do now. Mostly I remembered making some mittens. One was 5 sizes larger than the other because my gauge changed as I became more adept at the pattern. I was really into the rainbow variegated yarn back then. I was such a "hippie" ha ha .
Although the book has a 1972 copyright - I am almost positive I had it in 1970.