[Drill operator takes core from diamond bit and his helper puts it in wooden trough; depth of sample later recorded.], PCA0200-10, Box: PCA0200. Miscellaneous Alaskan views, circa 1913-1950, Bear Creek Mining Co., Anchorage pioneer Nellie E. Brown, St. Michael and Ft. St. Michael, PCA 200. Alaska State Library - Historical Collections Finding Aids. https://alaska.libraryhost.com/repositories/2/archival_objects/45974 Accessed November 06, 2024.