Born in Glasgow, Walter Brooks came to the U.S. as an infant.  He studied art at the Cooper Union and served in the army during World War II.  After the war ended, he pursued a career as a commercial artist.  Along with painting the covers for several paperback publishers, Brooks also wrote, edited, and illustrated a series of art instruction books.  From 1971 to 1972, he was President of the Society of Illustrators.

Though I couldn’t find much of his work online, I liked what I could find.  Brooks’s covers had an impressionistic style that set them apart from other paperbacks.