English: William R. Carter, a pharmacist for the United States government for 40 years, pictured working in an Food and Drug Administration (FDA) laboratory in 1941.
This image was originally posted to Flickr by The U.S. National Archives at https://flickr.com/photos/35740357@N03/3904009772. It was reviewed on 2017-05-18 15:55:01 by FlickreviewR, who found it to be licensed under the terms of the No known copyright restrictions, which is compatible with the Commons. It is, however, not the same license as given above, and it is unknown whether that license ever was valid.