
These novels came out in the late 1970s, if I recall correctly. Many of them were written by established comic book writers, but Joseph Silva wrote the Cap novel you see here. There had been an earlier Captain America novel, published in the 1960s, called "The Great Gold Steal," which I believe was written by Ted White.
Anyway, I used to have a lot of these novels a while ago, and I recall them being pretty good reads! I don't recall specifically if I ever had the Cap novel, though.