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Twain departed Elmira October 29 and arrived in Pittsburgh October 30.. He would have taken the Wlliamsport and Elmira to Williamsport; the Philadelphia and Erie to Linden; a no-name line to Lockhaven; another no-name line to Milesburg; then to the Bald Eagle junction; the Lockhaven and Tyrone to Tyrone; the Pennsylvania to Pittsburgh.
November 1 - Academy of Music, Pittsburgh, Pennsylvania
There are questionable dates for November 2 in Sharon or Brookville, PA, November 3 in Johnstown, PA and November 8 in Worcester, MA Lecture Schedule, 1868–1870, (MTDP 00329), n. 1.
The trip from Pittsburgh to Brookville would have been aboard the Allegheny Valley to a point near West Hills then no named lines to Brookville.
November 2 Tuesday – Sam lectured in Brookville, Pennsylvania – As reported by the Pittsburgh Gazette [MTL 3: 385].
To get to Johnstown, Twain would have back-tracked on the Allegheny Valley to Schenley and taken a no-name to Blairsville and from there, on the Pennsylvania to Johnstown.
November 3 Wednesday – Sam lectured in Johnstown, Pennsylvania [MTL 3: 385].
Note: It is possible that Sam did not speak in Brookville or Johnstown – more newspaper evidence might confirm. Letters Sam wrote Livy between Nov. 6 and 9 (Livy’s numbers 129-132) are lost [MTL 3: 391n4].