The Goblin Tower by L. Sprague de Camp
Continues a semi-tradition of reading Conan-esque books at the beach.
The Road to Damascus by John Ringo and Linda Evans
I'm pretty sure I read some Bolo books a long, long time ago. I think I even played a game based on it on my old Apple //e.
Stardrift by John Morissey
I just took a complete chance on this one since it was old (published 1973) and the blurb on the back caught my eye.