In his description of Three Basket and Louis Berry on the first page of the story, the narrator of "Red Leaves" compares their faces to the appearance of "carved heads on a ruined wall in Siam or Sumatra, looming out of a mist" (313). Sumatra is a large island that is part of the Asian nation of Indonesia. It's not clear that this analogy would help many of Faulkner's readers see the two Indians more clearly, but it certainly locates them in an exotic context.
[The most efficient way to learn how to read and use our maps of Faulkner's fictions is to view the 11-minute "Demo" available on each map page. The point of this essay is to explain the interpretive policies and editorial practices that we used to create the maps.]
Bayard and Ringo travel to "Tennessee Junction" when Aunt Jenny comes from Carolina to join her brother John Sartoris in Mississippi (235). No other details about this place are given, but it's likely that Faulkner is thinking of the place he calls "Memphis Junction" on his 1936 map of Yoknapatawpha.