I can't say much definitively without the book in front of me (and I don't have a copy either) but searches using HathiTrust's simple search function and the online table of contents seem to indicate to me that Alton Morris had Generally Patterson and I Can Whip the Scoundrel as two separate songs, with the phrase "Abner's Shoes" appearing only under the Scoundrel song.
I've got some pretty good research into the origins of the song itself that I'll type up nicely I'm a day or two, though I'm hoping a copy of Morris's texts may surface.
I could be wrong in saying this but I couldn't find an authoritative or amateur attempt to trace the song's history and origins. I may make a new thread for it or try to find an applicable one based on source songs, but that's a bridge I'll cross when I get there. If I make a new thread, though, I'll link it