A portion of the quote in question, especially: "I'm never mistaken for a Frenchman, except perhaps by horses." is very similar to the text of the speech given in Montreal on December 8, 1881 and published in _Mark Twain Speaking_ edited by Paul Fatout (1978). Fatout used a text first published in the Montreal _Gazette_ and republished in several newspapers. It is possible the quote in question was from a newspaper report that also covered the same event but not widely republished elsewhere. As a note to researching quotes, etc. I can recommend Google "Advanced Book Search" which allows searching for exact phrases written by specific authors. Fatout's speech book is now searchable using this method as are a number of other Twain reference books including _Mark Twain Encyclopedia_ and Louis Budd's collection of Mark Twain's _Collected Tales, Sketches, Speeches, & Essays_. Using google advanced book search for the exact phrase "perhaps by horses" combined with "Twain" will provide 6 sources for the quote. Barb