". . . we already know the story of the South. The South's story is set on a plantation in Mississippi or Louisiana or any other Southern state where overseers brandished whips over slaves picking cotton. In contrast, the North's story is thought to be heroic, filled with ardent abolitionists running that train to freedom, the Underground Railroad. The few slaves who may have lived in the North, it has been believed, were treated like members of the family. And, of course, Northerners were the good guys in the Civil War. They freed the slaves. Not all of the above is exactly mythology, but it is a convenient and whitewashed shorthand."
And . . .
"The truth is that slavery was a national phenomenon. The North shared in the wealth it created, and in the oppression it required . . . By and large, the region's [North] relationship with slavery, though extraordinarily profitable, was a distant one. That distance allowed the North to minimize and even deny its link with the institution that fueled its prosperity." (Emphasis mine) ~ Complicity: How the North Promoted, Prolonged, and Profited from Slavery, pages xxv-xxvi