No.	Title	Date
1	Photograph of Sierra Vista City map and agreement, August 4, 1931
2	Photograph of the first officials to cross Boulder Dam, 1935
3	Photograph of the Basic Magnesium, Inc. plant site prior to construction
4	Photograph of the Basic Magnesium, Inc. plant site prior to construction
5	Photograph of the Basic Magnesium, Inc. plant site prior to construction
6	Aerial photograph of the Basic Magnesium, Inc. plant site
7	Photograph of the construction of an administration building at Basic Magnesium, Inc.
8	Aerial photograph of the Basic Magnesium, Inc. plant site
9	Aerial photograph of the beginning of construction at the Basic Magnesium, Inc.
10	Aerial photograph of the Basic Magnesium, Inc. plant site under construction
11	Photograph of water tanks at Basic Magnesium, Inc.
12	Photograph of a cell building under construction at Basic Magnesium, Inc.
13	Aerial photograph of a building under construction at Basic Magnesium, Inc.
14	Aerial photograph of ongoing construction at Basic Magnesium, Inc.
15	Aerial photograph of Basic Magnesium, Inc.buildings under construction
16	Photograph of men constructing a cell unit at the Basic Magnesium, Inc. plant site
17	Photograph of workers pouring concrete at Basic Magnesium, Inc.
18	Aerial photograph of the Basic Magnesium, Inc. plant site
19	Aerial photograph of the Basic Magnesium, Inc. plant site
20	Photograph of a cell building under construction at Basic Magnesium, Inc.