Photo Record

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Accession number 2003-33
Collection Perham Collection - Perham History Files
Catalog Number 2003-33-47
Object Name Print, Photographic
Year Range from 1930
Year Range to 1930
Title 240 cycle Gas engine alternator (240 cycle, two-phase), 1930.
Description Gas engine alternator (240 cycle, two-phase) forerunner of 400 cycle, three-phase engine now standard, 1930.
Subjects Heintz and Kaufman, San Francisco, Calif.
People Heintz, Ralph M., Sr.
Kaufman, Jack
Print size 4 3/8 x 6 1/4