National Jukebox - Historical Recordings from the Library of Congress 78 RPMs and Cylinder Recordings (from archive.org's Community Audio Collection) http://78records.cdbpdx.com (an amazing quantity of digitized 78 recordings. Required username and password are right there at the top of the page.
Eric Byron is the creator of Big Horn, the original rolling street 78 phonograph. He is the author of Crank Up the Phonograph, an academic work that explores how Americans of a century ago viewed the world. (Available as a free pdf download.) Youtube video: Modification of a Technics SL-D1 turntable to play 78 rpm The78rpm Record Spins: A fine WordPress.com site about 78rpm records Who the heck is this guy who plays old records on the street anyway?