Aerial image of the area around the Badlands Guardian in Alberta, Canada
Unknown author<span style="display: none;">Unknown author</span>
1938-05-20
Canadian National Air Photo Libraryː Roll number A5951, photo 0058 (<a rel="nofollow" class="external text" href="https://www.eodms-sgdot.nrcan-rncan.gc.ca/wes/getObject?FeatureID=SERVICE-NAPL_0001-000000000000000000-533543&amp;ObjectType=Thumbview&amp;collectionId=NAPL&amp;Scale=false">preview</a>)