This woman MAY BE Vashti Agnes Knight (Mosby after marriage) (1891-1981) on the porch of her home at 220 South 20th Street circa 1910-1911.
Photographs taken on black and white glass negatives by African American photographer(s) John Johnson and Earl McWilliams from 1910 to 1925 in Lincoln, Nebraska. Douglas Keister has 280 5x7 glass negatives taken by these photographers. Larger scans available on request.