J. Justin Castro began the doctoral program at the University of Oklahoma in fall 2008. He is a PhD candidate in Latin American history, studying under the direction of Dr. Terry Rugeley. Mr. Castro is currently working on his dissertation titled Empire Within: Wireless Communications and the Mexican Nation, 1897-1940. He regularly presents his work at the Rocky Mountain Conference on Latin American Studies (RMCLAS) and he joined a panel on Latin American radio at the 2011 Conference on Latin American History (CLAH). From his MA thesis on music and ethnic interaction in the Oklahoma Ozarks he has published two articles in the Chronicles of Oklahoma and has a chapter in Main Street Oklahoma, An American Story, a forthcoming book edited by Linda Reese and Patricia Loughlin on OU Press. Mr. Castro has additionally written numerous entries for the Encyclopedia of U.S. Intervention in Latin America edited by Alan McPherson (forthcoming ABC-CLIO, 2013) and is currently working on an article about the uses of wireless telegraphy in Mexico, 1900-1924.