Beacon Hill Reservoir cleaning operations (south unit) Feb and March 1954 - Water Department Brochure - prints and negatives, 1954 - 1954, Box: 1, Folder: 03576-03580. Water Department Photographic Negatives, 8200-13. Seattle Municipal Archives. https://leglas100/finding-aids/repositories/2/archival_objects/193997 Accessed June 02, 2026.