Caption at bottom of postcard reads: 150 man transport- Boulder Dam Bureau of Reclamation Photo." Boulder Dam was officially re-named Hoover Dam in 1947.
Postcard advertizing a souvenir cable section paperweight of the Boulder Dam- Los Angeles power line. Boulder Dam was officially re-named Hoover Dam in 1947.
An image of a film crew shooting penstock valves while they were open for the Boulder Dam dedication. Note: Boulder Dam was officially renamed Hoover Dam in 1947.