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This frequency changer at Edison's Colton Substation was a major point of interconnection with Southern Sierras Power Company, prior to the frequency change

Description: This frequency changer at Edison's Colton Substation was a major point of interconnection with Southern Sierras Power Company, prior to the frequency change. Pg. 219.
Type: Visual Materials(Opens in new tab)
Date: undated
Call number: photCL SCE 11 - 00438
Find out more: View in the Huntington Digital Library(Opens in new tab); View in the Library catalog(Opens in new tab)

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