Papers relating to "The Last Political Conversation of Andrew Johnson," a document typed most likely in the 1920s by Captain McElwee, who either typed it himself or dictated it. The document, rediscovered in 1977, describes an 1875 conversation with Andrew Johnson on a train out of Knoxville, Tennessee, shortly before Johnson's death. The discussion that took place was significant in detailing parts of the assassination of President Abraham Lincoln ten years earlier.

A 1977 article from The Sylacauga Times summarizes the document written by McElwee, and an Associated Press article paraphrases and notes potential limitations of it. An article from the Historical Society in Nashville, Tennessee, re-types the document and includes notes from historians about the significance of McElwee's story.