New Englander William Allen (1830-1889) is mostly known today as the lead editor of the 1867 anthology Slave Songs of the United States, the earliest published collection of Negro spirituals, and as a distinguished history professor at the University of Wisconsin. During the Civil War, he served from late 1863 through mid-1864 as a member of the "Gideonite band" of businessmen, missionaries, and teachers who migrated to the South Carolina...