This cover was designed by Fred Troller. I hadn't heard the name until I came across this book, but after looking into it a little I realized that I had seen Troller's work many times before. He was a Swiss designer (born in 1930) who spent most of his career in New York. Massimo Vignelli said that ''His designs successfully combined Swiss rigorousness with American vitality.'' Unfortunately Troller died in 2002, Steven Heller wrote the NYT obit. The above book was published in 1972.
I found a post on the blog TPW that links to an article in PDF form about Troller. The covers below come from that piece.