Anyone interested in some of the more odd and curious aspects of the American Revolution, its life and times, should enjoy the wealth of material at Journal of the American Revolution. Title link my latest, but there is something there for everyone. While I'm here, my Great Siege of Malta is now available for pre-order in paperback, release date June 6. Very reasonably priced and just as good as the hardcover (which is available now). Perfect for graduation/fathers' day/beach reads. Do the author a solid! I have a child looking at colleges.
Official release day for my history of same. Christmas is coming, the book could be suitable for the non-fiction readers on your list. Pre-release readers have described it as a fast read, "well-researched, convincingly argued and engagingly written."