Twain spoke at the Town Hall December 23, 1870
November 1 - January 21, 1870 Lecture Tour: At least 49 engagements - "Our Fellow Savages of the Sandwich Islands"
One version of this speech is published in Mark Twain Speaking, pp. 4-15.

Also see Steve Railton's web site at the University of Virginia for more details on on this tour. Under the management of James Redpath http://commons.wikimedia.org/wiki/File:Town_Hall,_Rockport,_by_E._G._Ro…