Checked out the book on Internet Archives (linked in comments).

It all seems so nostalgic and free-spirited now. Was way before my time, but I’ve been to a few of those beaches. So many of them are so conventional now. Guessing people are way more uptight, but maybe also cognizant of the risks of skin cancer.

Bonus: 2/3 of the way in, a surprising amount of copy was spent on technical aspects of nude photography.