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:
Mosander Carl Gustav bw. en Scan of picture of Swedish chemist Carl Gustav Mosander who died in Journal of Chemical Education volume number page Weeks Mary Elvira small grainy lowresolution scan would seem to qualify as fair use Subject died over years ago No alternative image seems to be available PDArt Chemists from Sweden