Have never been in the deep South, but it’s on my bucket list.
The French Camp dogtrot is an excellent preserved cabin — unfortunately, it is not in the Library of Congress archives. It was the subject of an interesting study which demonstrated that the old-timers knew what they were doing — dogtrot cabins produced good passive ventilation. See: http://www.arch.ced.berkeley.edu/vitalsigns/bld/Casestudies/dogtrot_high2.pdf