From page 520 The Life of Mark Twain: The Early Years, 1835-1871:

am publicly announced his change of plans in the Express on September 11: ‘after recently withdrawing from the lecture field for next Winter, I have entered it again (until Jan. 10), because I was not able to cancel all my appointments, it being too late, now, to find lecturers to fill them.” With his change in plans, he canceled his contemplated West Coast trip and discarded the prospect of speaking on “Curiosities of California.” Instead, he switched the topic and title of his winter lecture to “Our Fellow Savages of the Sandwich Islands,’ a reworked version of his old talk on Hawaii. By September 27 he acknowledged to Bliss that, while he liked “newspapering very well, as far as I have got,’ he would “adjourn, a week hence, to commence preparing my lecture” in Elmira.” He left Buffalo and the inner sanctum of the Express for Elmira and the Langdon mansion on the evening of September 30 and, though he mailed occasional contributions to the newspaper while on tour, he did not resume his editorial duties until after his wedding the following February 2.

In the spring of 1869, Mark Twain became associated with the Boston Lyceum Bureau, recently established by James Redpath.  He promised Redpath ten nights in the state of New York, "provided the towns were close together, but for the most part intended to accept engagements only in the six New England states."   In August, after purchasing a partnership in the Buffalo, New York Express, he attempted to cancel all engagements.  Redpath refused.  Finally, the tour "ranged up and down the coast from Maine to Washington D.C. and throughout New York State and eastern Pennsylvania.  And since Redpath had managed to book many of the lectures with Boston as a hub, Mark Twain was able to maintain his room at Young's Hotel and return there almost nightly to be with friends and spend pleasant hours visiting in Redpath's bureau.  What pleased him no less was the fact that the tour included nearly all the large cities in the entire area."  (Lorch pp 99,  103, 105).

November 1 - January 21, 1870 Lecture Tour: At least 49 engagements - "Our Fellow Savages of the Sandwich Islands"   Under the management of James Redpath.