Liner Notes from Pete Seeger's America's Favorite Ballads, Vol. 2
Wikipedia Article about it, where it tells about the melody's use in popular culture, including an episode of Gomer Pyle (left) and (warning: graphic imagery) as Resident Evil 7's theme song.
Link to blog about the connection between Rousseau and Aunt Rhody. Here is a link to IMSLP where you can download the opera.
This website, Ballad of America, says it was a play-party, but has no supporting evidence.
Information about the same tune and its use in hymnals, when it's named Greenville.
Variant from "On the Trail of Negro Folk Songs" by Dorothy Scarborough. (Click picture for complete notation).