This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Marcet Jane. Scan of picture of writer Jane Marcet who died in Edgar Fahs Smith Collection University of Pennsylvania Journal of Chemical Education February page small lowresolution scan would seem to qualify as fair use Subject died over years ago No alternative photograph seems to be available PDArt History of chemistry