A little poking around found that Stewart Dickson was a librarian in the Library of Congress. Many history books mention his assistance in the acknowledgements. He was a musician, an organist, who originally specialized in the music department when he began working there in the '20s. He was an only child who never married so we might assume this quilt and another he donated were from his family.
According to the 1870 census Thomas Dickson was born in Missouri in 1868 to James and Susan Dickson. Susan was born about 1834 in Kentucky. I wouldn't be surprised if these were Susan Dickson's quilts. Her maiden name may have been Dietle as many social notes tell us Mrs. James Dickson was visiting her mother Mrs. John Dietle (various spellings) in Huiskamp in Marion County.
In 1870 and '80 Susan was living in Liberty Township in Marion County, eastern Missouri north of Hannibal; the communities are so small they didn't make the map.
The third quilt in the DAR Collection is associated with the Poindexter family in Cooper County. Do note in the 1880 census that the Dicksons live adjacent to a Black family headed by William Munday. His wife Peggie Munday's mother is Julia Poindexter. The white Poindexter family is associated with African-American Poindexters in Cooper County.
Look at origins of all quilts one can find with this kind of impressive stuffed work quilting: sampler of images, some patriotic.
More genealogy work in Missouri and Kentucky, particularly Logan County.
More work on needlework curricula in Kentucky boarding schools.