One from 1941: The Matchlock Gun, by Walter D. Edmonds, set in 1757; and one from 1973: The Slave Dancer, by Paula Fox, set in 1840. Both are especially interesting when it comes to race - check out the title links for my reviews at The Newbery Project.
I'm also reading Monique and the Mango Rains: Two Years with a Midwife in Mali, by Kris Holloway, and it is simply amazing. I wish I'd heard about this book a year or two ago, because then I could have seen the author when she came to Ann Arbor and talked about her book. It is an especially nice follow-up to The Birth House, which my book club read last month, and reminds me of two great books on Africa by anthropologists: Return to Laughter, by Eleanor Smith Bowen, and Dancing Skeletons, by Katharine A. Dettwyler.