The Mote in God's Eye, by Larry Niven, copyright 1974; Timescape, Pocket Books, Simon and Schuster, 1974. Still fun to read.
Queen's Gambit Declined, by Melinda M. Snodgrass, copyright 1989; Questar, Popular Library, Warner Books. An antifantasy, and very good.
The Opal-Eyed Fan, by Andre Norton, copyright 1977; E.P. Dutton, 1977. This is one of Norton's historicals, and is set on one of the Florida Keys in the middle 1800s. I like Norton's science fiction better, but the historicals are good.
Random musings on books, code, and tabletop games.