Southwestern Humor and Mark Twain - About the storytelling genre that originated in the frontier region of Georgia, Tennessee, Alabama, Mississippi, Louisiana, Arkansas and Missouri in the decades before the Civil War -- and influenced Twain. Includes examples of writings. - http://etext.lib.virginia.edu/railton/projects/price/southwes.htm
Southwestern Humor, 1830-1860 - Introduction to the tradition of regional sketches and tales based in the "old South-West": Tennessee, Alabama, Mississippi, and Arkansas. - http://guweb2.gonzaga.edu/faculty/campbell/enl311/swhumor.htm
Southern, Texas, and Yankee Jokes - Collection of clean jokes about southerners and Texans, sometimes in contrast with outsiders. - http://www.gospelweb.net/southerntexasyankeejokeindex.htm