World's highest dam completed - 376 foot high Pacoima dam in California took 4 years to build and cost {dollar}2,500,000 [photonegative]
odd: label: Local Numbers
content: RSN 18575

 AC0143-0018575 (AC scan)

 Video number 27607
label: General
content: Company catalog card included.
label: General
content: Currently stored in box 3.1.71 [227B].
label: General
content: U&U caption in file box: 2028-A309.
name: label: Publisher
content: Underwood & Underwood
label: Collection Creator
content: Underwood & Underwood
topic: label: Topic
content: Machinery
creator: label: Publisher
content: Underwood & Underwood
setName: label: See more items in
content: Underwood & Underwood Glass Stereograph Collection
label: See more items in
content: Underwood & Underwood Glass Stereograph Collection / Series 3: Underwood & Underwood glass plates / 3.1: Underwood and Underwood Negatives / RSN Numbers 18538-18639
physdesc: label: Extent
content: 1 Item (4" x 5".)
phystech: label: Medium
content: Silver gelatin on film. (possibly nitrate)
dataSource: label: Archival Repository
content: Archives Center, National Museum of American History
objectType: label: Type
content: Archival materials
label: Type
content: Photographs
genre_format: label: Genre/Form
content: Photographs -- 1920-1930 -- Black-and-white negatives -- Nitrate film
scopecontent: label: Scope and Contents
content: Caption: "San Fernando, Cal. - Photo shows: A closeup of the huge 30-inch outlook valve with which the impounded waters are controlled in the new Pacoima Dam which has just been completed at a cost of {dollar}2,500,000. It was built by Los Angeles county as a part of its water conservation program and drains 25 sq. miles in the Sierra Madre Mts. It is 660 feet long at the top and 100 feet thick at the bottom. It has a maximum stress of 600 pounds to the square inch."