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:
John Alexander McClernand. Portrait of Major General John McClernand officer of the Federal Army LoC image Civil War photographs compiled by Hirst Milhollen and Donald Mugridge Washington Library of Congress No loc gov pnp via en to Brady National Photographic Art Gallery Washington photographer via Library of Congress