Estie (Henline) Godfrey Thomas was wearing a dustcap in this still taken from a 1960s home movie by her Forinash descendents. As the other photos show, in the 1870s or '80s Estie's grandmother Fibi (Conrad) Skinner was wore one and so did her Aunt Christina (Murphy) Posey. Pat Rickart remembers at least one grandmotherly woman in 1940s Orlando who a dust cap.
Dust caps fell out of general fashion in the early 1800s. In 1863 Joseph Diss Debar sketched the images of West Virginia's working women seen to the left. He showed a bonnet more like the ones we see on the pioneers heading west in the mid 1800s, but he didn't include the dust cap, as seen on our Orlando forbears.
Still, into the 1940s and even 1960s we can find women of the Oil Creek valley for whom dust caps were part of every-day life.