So I went to the Salvation Army to browse books, and was rewarded with:
Papberback editions of Little House on the Prarie, On the Banks of Plum Creek, The Long Winter, and By the Shores of Silver Lake by Laura Ingalls Wilder, Ozma of Oz by Baum, The Twenty-One Balloons by Pene du Bois, and 2095 and Your MotherWas a Neanderthal by Scieszka.
The adult haul of four hardcovers included Pattern Recognition by William Gibson and Turtle Moon by Alice Hoffman. I cannot describe how tickled I was to find a copy of The Fleet the Gods Forgot. It focuses on the Pacific Fleet right after Pearl Harbor, and also contains the remarkable story of the sailors who took a motor whaleboat from Corrigedor to Australia.
The last find was a small history book printed in 1912: A General History of the World, Vol IV, which has a stamp inside for Assandawi Outdoor School for Girls. The spine is crumbling off, though, so I stuck it in a ziplock until I can figure out how to preserve what's still there. I like reading old history or political books, because they tell so much about how Americans viewed the rest of the world at that time.