"Confederate Park they called it" (315) - that is Mink's way of referring, as an out-of-towner, to the Memphis park on the bluff overlooking the Mississippi River where he thinks about spending the night. He sees "the path and flowerbed crisscrossed vacancy exactly as he remembered it" from a previous trip to the city, along with "the line of benches along the stone parapet in the gaps of which the old iron cannon from the War squatted" (315). The park still exists, but they don't call it Confederate any more; in 2013 the city council changed its name to Memphis Park.
"Confederate Park they called it" (315) - that is Mink's way of referring, as an out-of-towner, to the Memphis park on the bluff overlooking the Mississippi River where he thinks about spending the night in The Mansion. He sees "the path and flowerbed crisscrossed vacancy exactly as he remembered it" from a previous trip to the city, along with "the line of benches along the stone parapet in the gaps of which the old iron cannon from the War squatted" (315).
"The small dingy store" in Memphis where Mink buys animal crackers may be owned by the "Negro man" who is running it; the "few customers" inside are also Negroes (319).
The "Teaberry" hotel where Montgomery Ward Snopes spends a night on Flem's money (79) is probably Faulkner's way of referring to the Peabody, one of the oldest, poshest hotels in Memphis. The text distinguishes it from the "dump" where Clarence Snopes spends the night, and it is not included in the narrative's reference to the "pool rooms and the sort of hotel lobbies" that Clarence patronizes (82).
The "few customers" inside the "small dingy store" in Memphis where Mink buys animal crackers in The Mansion are Negroes, and it's not unlikely that the store itself is owned by the "Negro man" who is running it (319). The South's first black millionaire was a former slave and successful realtor who opened a bank in Memphis in 1906 to make sure Negroes had access to capital, and there were many black-owned businesses in the city by the time Mink gets there.
When in The Mansion Mink claims he has been "over a year in a hospital up in Memphis," the black man for whom he is picking cotton asks if he means "the Govment Vetruns Hospital" (439). Mink of course is trying to disguise the fact that for almost forty years he's been in prison in Mississippi, but there were several real medical facilities for veterans in Memphis by the 1940s; there's no way to tell which one the farmer might have been thinking of.
When he becomes a very successful wholesale grocer in The Mansion, Wallstreet Panic Snopes "removes with his family" from Yoknapatawpha and moves to Memphis. The novel provides no clue to where in the city they live, but Wall is successful enough to suggest it's in a fashionable part of the city. And we don't know anything about his house, but if it is a 'mansion' then it provides a meaningful counterpoint to the mansion in the novel, the one Flem acquires by such different means.
In The Mansion Mink Snopes has been thinking for almost fifty years about this particular "Memphis pawn shop" as the place to get a gun to kill Flem (115). When he finally reaches it, he notes that "the window had not changed" since he saw it so long ago: "the same unwashed glass behind the wire grillework containing the same tired banjos and ornate clocks and trays of glass jewelry" (320).