Skip to main content

Search the Special Collections and Archives Portal

Search Results

Display    Results Per Page
Displaying results 813611 - 813620 of 830606

Upper portal of the Six Companies railroad tunnel Number 1: photographic print, 1931 August 09

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Six Companies railroad grade above railroad tunnel Number 1 showing the proposed location of the "low-mix" concrete mixing plant: photographic print, 1931 August 09

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Boat landing at railroad tunnel Number 1 and the catwalk to the Arizona side of Black Canyon: photographic print, 1931 August 09

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Duplicate of photographic prints: photographic negatives, approximately 1932 to 1934

Level of Description

File

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Hoover Dam: photographic print, 1933 June 27

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Cut-off trench at upstream side of Hoover Dam: photographic print, 1933 June 23

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Hoover Dam: photographic print, 1933 June 27

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Nevada spillway, looking upstream: photographic print, 1933 June 27

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Lower portals of diversion tunnels discharging 73,000 cubic feet per second flow into Colorado River: photographic print, 1935 June 16

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component

Arizona spillway, looking upstream: photographic print, 1933 June 27

Level of Description

Item

Archival Collection

Six Companies, Inc. Hoover Dam Photograph Collection

Archival Component