Verification
Newspaper reports
The Atchison Globe, April 24, 1882, 1
The Chicago Tribune, April 24, 1882
The Herald-Dispatch (Decatur, IL) April 29, 1882, 7
Newspaper advertisement
Atchison Daily Champion, April 21, 1882, 1
Lecture subject corrected
Atchison Daily Champion, April 22, 1882, 4