Does anyone have the pamphlet cited in the first post? I do not find it listed in worldcat.
The songs sound like material one would find in a vaudeville/music hall entertainment. There is an interesting advert. in the BOSTON
SUNDAY GLOBE— SUNDAY, JULY 17, 1892 for AUSTIN and STONE'S MUSEUM
first appearance of Moore. "First Appearance in the City of the Mental marvel" "195h Century Blind Tom Outdone" Possibly this
reference is to Tom Wiggins - see wiki: "Thomas "Blind Tom" Wiggins (May 25, 1849 – June 14, 1908, age 59) was an African American musical prodigy on the piano. He had numerous original compositions published and had a lengthy and largely successful performing career throughout the United States. During the 19th century, he was one of the best-known American performing pianists. Although he lived and died before autism was described, he is now regarded as an autistic savant."

Best wishes, Thomas.