Image: Walter-hough-crop
Walter-hough-crop.jpg (165 × 334 pixels, file size: 33 KB, MIME type: image/jpeg)
Description: Dr. Walter Hough of Smithsonian in arrowhead quarry (Rock Creek Park), 3/6/26
Title: Dr. Walter Hough
Credit: This image is available from the United States Library of Congress's Prints and Photographs division under the digital ID npcc.15587. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing for more information.
Author: unknown, National Photo Company
Permission: Rights Advisory: No known restrictions on publication.
Usage Terms: Public domain
License: Public domain
Attribution Required?: No
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