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:
Fort Sumter Centennial c. Battle of Fort SumpterSmithsonian National Postal Museum Image enlarged rendered for tone and clarity by Gwillhickers Post Officebr by Charles Chickering US Postage Stamp issue commemorating the Centennial of the battle at Fort Sumter April Civil War PDUSGov History of the United States on stamps Stamps