He specializes in the Old South, slavery, labor history, and Mississippi history. Grivno’s first book, Gleanings of Freedom: Free Labor and Slavery along the Mason-Dixon Line, 1790-1860, was published in 2011. He is currently writing From Bondage to Freedom: Slavery in Mississippi, 1690-1865 and is researching another book, Bandits, Klansmen, Rioters, and Strikers: Violence in the Alabama-Mississippi Black Belt, 1830-1917.