This site from Musicals101.com explains the emergence of vaudeville and burlesque from the middle class needs of industrialized America. Part II explains what makes up a vaudeville act.

Interesting site that explores the roots of comedy routines on radio. Examines major figures and their comedy/vaudeville on the airwaves through the century. Good resource site.

PBS presents biographical information and a career timeline on one of America's greatest producers and Academy Award winner, Sam Goldwyn.

From the PBS series, American Masters, this is a description of early 20th century American popular theater, Vaudeville.