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:
Katharine S. Love PP ... Photograph unknown en Fox and Katharine Love Fixed Nitrogen Research Laboratory Nitrogen Analytical Laboratory Fox is seated to the left Love is standing to the right behind laboratory workbench and blowing into piece of glassware depicted people Fox Katharine Love depicted place Fixed Nitrogen Research Laboratory