Via R, I just found out about The Green Book, a travel guide series for African Americans, 1936 to 1964:
In a semi-related vein, I highly recomend Confederates in the Attic by Tony Horwitz. I'm about halfway through it, and am digging it: romantic reenactors and pharmacist-historians and neoconfederate a-holes, oh my. It was written during the Gingrich 90s -- weird to think the confederate take over of the Republican party at that time is reaching its final ouroboros worm-like death grip now.
May add R's original link at a latter date, as I don't have it handy at tha mo'.