https://digitalcollections.library.ucsc.edu/Documents/Detail/mount-wilson-california.-mount-wilson-observatory-back-view-of-the-200-disk/2557
Mount Wilson, California. Mount Wilson Observatory: back view of the 200" disk - Digital Collections
Mount Wilson, California. Mount Wilson Observatory: back view of the 200" disk, Series 6: Glass Negatives, 3 1/4 x 4 1/4 in, Lick Observatory photographs, The...
mount wilson californiaback view