Thomas A. Horrocks is an independent scholar living in Cambridge, Massachusetts. He holds a Ph.D. in history from the University of Pennsylvania and serves as Editor in Chief of The Lincoln Herald, published quarterly by Lincoln Memorial University in Harrogate, Tennessee. He spent thirty years working as a library administrator, including a position as Director of the John Hay Library at Brown University, and has authored, edited, and co-edited eight books, including Harvard's Lincoln; The Living Lincoln, co-edited with Harold Holzer and Frank J. Williams; Lincoln's Campaign Biographies; and most recently, The Annotated Lincoln, co-edited with Harold Holzer.