Earl B. McElfresh (St. Lawrence University) is the author of Sidereal Days, The History of Rock & Roll, A Romance (Tammy Norie Press e-book 2012,) Maps and Mapmakers of the Civil War (Abrams, 1999) and contributing editor to Company Commander by Charles B. MacDonald (History Book Club, 2007.) He is a regular contributor of Civil War articles to Civil War Times Magazine. His most recent article "Robert E. Lee and Mapping the Gettysburg Campaign" appears in the August 2013 issue of Civil War Times.
He has spoken on Civil War mapping at The Smithsonian, The National Archives, The Library of Congress, The New York Public Library, The Boston Public Library, The Newberry Library, The Harvard Map Collection, The Warburg Institute in London, National Geographic and on C-Span Book TV.
His on-site research for the Cold Harbor Battlefield, Hanover County, Virginia map was documented in an article in the November/December 2000 issue of Preservation magazine.
His plays Marvels of Modern Man and Amid Planetary Music were performed at St. Lawrence University. His play Honor Luck received a reading at the New Phoenix Theater in Buffalo. His screenplay Lazy Eye was filmed and premiered at the New School in New York.