AS25A: Here, about 140 miles north of Valdez, the structural supports for the valve control module were being completed. 41 valves were installed of the 162 remote and check valves required., 1976-05, PCA0002-1b-51, Folder: PCA0002-1b. Alyeska Pipeline Service Company : Trans-Alaska Pipeline Construction Collection, 1976-1977, PCA 2. Alaska State Library - Historical Collections Finding Aids. https://alaska.libraryhost.com/repositories/2/archival_objects/17389 Accessed February 22, 2025.