Stanley Harrold has written American Abolitionism: Its Direct Impact from Colonial Times into Reconstruction (Charlottesville: University of Virginia Press, 2019). The book examines — among other aspects of the abolition movement — how federalism affected antislavery politics from colonial times to Reconstruction. Carl Lawrence Paulus has reviewed the book, suggesting that Harrold makes clear that “without federalism . . . political abolitionism would never have gotten the oxygen needed to light a fire for freedom nationally.”