Today we have icy roads (and sidewalks), so school will start 2 hours late. I am looking at resources for 3rd graders who are doing biography reports of Famous, Inventive and Notable People.
The Smithsonian Museum has a search box giving you access to over seven million records including images. I put in the term 'Thomas Edison' and got old photographs, stamps and drawing of this famous inventor.
By clicking on the term 'EXPAND', and 'RECORD LINK' I can see the details of the Cataloging.
Here I can read that there are no restrictions on the use of this image, and send myself an email with the details.