Control Works Drain line (overflow to Cedar River) 4-21-1950 by HRH - prints and negativess, 1949 - 1949, Box: 1, Folder: 03377-03381. Water Department Photographic Negatives, 8200-13. Seattle Municipal Archives. https://leglas100/finding-aids/repositories/2/archival_objects/193957 Accessed June 02, 2026.