First use of Steel piling in place of timber cribbing - to cut in tee for 8" service to Carnation Co - E 45h St, E of 25th NE, 1955 - 1955, Box: 3, Folder: 04427. Water Department Photographic Negatives, 8200-13. Seattle Municipal Archives. https://leglas100/finding-aids/repositories/2/archival_objects/194514 Accessed June 02, 2026.