Benjamin Heber Johnson is associate professor, Department of History, Southern Methodist University. He is the author of "Revolution in Texas: How a Forgotten Rebellion and Its Bloody Suppression Turned Mexicans into Americans," published by Yale University Press. He lives in Dallas. Jeffrey Gusky is an emergency physician, a fine art photographer, and a documentary film producer. He is the author of a previous art photography book, "Silent Places: Landscapes of Jewish Life & Loss in Eastern Europe," He lives in Dallas.