Mark Twain's lecture in Petoskey, Michigan. The Northern Arrow train and a note on the demise of the passenger pigeon. \

http://web.archive.org/web/20071009155102/http://lifeofbirds.com/2007/01/06/was-martha-the-last-pigeon-de-passage/

 http://twain.lib.virginia.edu/onstage/wrldschd.html

 Wikipedia

Eccentricities of Genius by Major Pond

Mark Twain Day by Day, by David Fears \