I just want to thank Matt Seybold for his essay /EVEN IF HE WEREN’T MY
FRIEND: FREDERICK DOUGLASS & MARK TWAIN,
<https://marktwainstudies.com/freddouglassmarktwain/>/ He offers an
excellent summary of the history of the Douglas-Langdon relationship and
for my purpose, a strong argument for Twain's presence at the Douglas
speech on that date.
/Unaffiliated Geographer and Twain aficionado/