The 1901 Garrard Mill in Lancaster, Kentucky, marked their grain bags with their logo (see above photo). They also packed their flour in cotton cloth bags of various colored patterns -- women used this cloth to sew clothes or make quilts.
Just perhaps some of the strip quilts that we see today have pieces of flour sack material in them?
Garrard Grist Mill was built in 1901 and was sold at auction in the latter part of the twentieth century. It is now in private hands and no longer mills for the area.
The Garrard Mill is listed on the National Register of Historic Places
Margaret Simson, Garrard Historical Society
Southern Folk Art and Antiques -- Photo -- Garrard Mill Bag