Quilts described in Gladys-Marie Fry's Stitched from the Soul:  Slave Quilts from the Ante-Bellum South as having been made by slaves

Left and below:  Quilts claimed by Fry in to have been "made by slave Nancy Vaughn Ford...[they] are important, for they are good examples of the utilitarian quilts made by slaves for their own use in their free time." Strip quilt at left  uses a 1960s "op art" heart print in two colorways; Crazy Ann quilt below is traditionally pieced of 1920s and later shirting fabrics with a backing of 1930s floral cretonne, and has been heavily patched.  The "blue knitted section... incorporated into the quilt" is actually a patch - see closeup here

Below left and right:  Quilts which Fry says were "made by Phillis, a slave imported from the Congo in 1818 as a 12- or 13-year-old slave girl.  She became the plantation cook..."  Trip Around the World quilt, below, made of late 1930s fabrics and has multiple borders of printed feedsacks from around 1940; Bow Tie quilt at right contains numerous  1930s prints. 

Right:  Quilt described by Fry

as being made by "slaves that were

specially trained to do quilting." 

Quilt appears to be a c.1940s kit quilt.