この作品は、次の理由でパブリックドメインに属します。"The vast majority of the digital images in the Archival Research Catalog (ARC) are in the public domain. Therefore, no written permission is required to use them. We would appreciate your crediting the National Archives and Records Administration as the original source." From Frequently Asked Questions: Copyright, U.S. National Archives
"Moving up through Prato, Italy, men of the 370th Infantry Regiment, have yet to climb the mountain which lies ahead." Bull, April 9, 1945. Photo from the U.S. National Archives Source: http://www.archives.gov/research/ww2/photos/images/ww2-94.jpg {{PD-