Dayton Ave - between N 171st Sts - lowering 8" main so street grade can be changed - prints and negs - LHB - 9-23-1955 04372 to 04379, 1955 - 1955, Box: 3, Folder: 04372. Water Department Photographic Negatives, 8200-13. Seattle Municipal Archives. https://leglas100/finding-aids/repositories/2/archival_objects/194500 Accessed June 02, 2026.