November 17 - 23, 1868: Cleveland, Ohio; Pittsburgh, Pennsylvania; and Elmira, New York. Twain traveled on six or more railroads. To and from Cleveland and Pittsburgh he rode the Cleveland and Pittsburgh for 118 miles each way and the Pittsburgh, Fort Wayne and Chicago 26 miles each way. The Cleveland and Pittsburgh line had five junctions along this section at Hudson, Alliance, Bayard, Wellsville and Beaver. The Pittsburgh, Fort Wayne and Chicago line junctioned with the Allegheny Valley, the Pennsylvania and a no name railroad at Pittsburgh that would become part of the Pittsburgh Division of the Chicago and St. Louis railroad.
Twain returned to Cleveland then journeyed to Elmira. The first leg of this trip would have been aboard the Lake Shore railroad, from Cleveland to Buffalo, 181 miles. This line had 5 junctions with other railroads, at Ashtabula, Girard, Erie, Brocton and Dunkirk. The second leg, from Buffalo to Elmira, 149 miles, he likely rode the Buffalo, New York and Erie, the New York and Erie, and the Chemung railroads. This leg would have passed through 5 junctions: Attica, Hornell, Painted Post, Corning and Horseheads.
"Despite his rapidly growing reputation through the publication of The Jumping Frog and his articles in various metropolitan newspapers, he was not well known. Innocents Abroad had not yet made its appearance. At best, in so far as he was known at all in mid-western communities, he was still a mere newspaper humorist - fresh, vigorous, and promising, a man with an interesting pseudonym, but with nothing really substantial to recommend him to local lyceum committees." (Lorch pg 94)
November 17 - Case Hall, Cleveland, Ohio
November 19 - Pittsburgh, Pennsylvania
As Sam wrote to his family from Cleveland, he must have returned there after the Pittsburgh show and departed from there for Elmira on the 20th; arriving there on the 21st.
November 23 - Opera House, Elmira, New York