I'm hoping someone might have some information on just how Sam traveled 
from Greenville (Shenango) to Sharon, PA for his lecture there.  There 
were, to the best of my knowledge, no railroads in Sharon until October 
of 1869.  There is only one mention of Sharon in his letters at that 
time, to Mary Fairbanks.  I must go off to work now, but there might be 
something involving the canal.

/Unaffiliated Geographer and Twain aficionado/