University of Massachusetts Press
John Brooke shows that "between 1850 and 1854, white northerners experienced fundamental political and cultural shifts that pushed enough of them towards an active antislavery politics that a conflagration with the slaveholding South became almost inevitable."
"“There Is a North”: Fugitive Slaves, Political Crisis, and Cultural Transformation in the Coming of the Civil War,"
Civil War Book Review: Vol. 23
Available at: https://digitalcommons.lsu.edu/cwbr/vol23/iss1/17