“It is a singular coincidence, that Solomon Northup was carried to a plantation in the Red River country⁠—that same region where the scene of Uncle Tom’s captivity was laid⁠—and his account of this plantation, and the mode of life there, and some incidents which he describes, form a striking parallel to that history.”

Key to Uncle Tom’s Cabin, p. 174

To
Harriet Beecher Stowe:
throughout the world, is identified with the
great reform:
this narrative, affording another
key to Uncle Tom’s Cabin
is respectfully dedicated.