Sangamo Electric Company of Springfield, Illinois : manufacturers of electric meters for all purposes.
[Springfield, Ill.? : Sangamo Electric Company?, 1915?]
BEIN Zc72 915pa 26: Stamp on t.p.: Sangamo meters were awarded medal of honor highest award for watthour and amperehour meters, International Jury of Awards, P.P.I.E. 1915.
"1915 Palace of Machinery, Panama Pacific International Exposition, San Francisco."
Sangamo Electric Company.
Panama-Pacific International Exposition (1915 : San Francisco, Calif.)
World's fairs. aat
World's fairs -- California -- San Francisco -- 1915. aat
Panama-Pacific International Exposition (1915 : San Francisco, Calif.)
Philadelphia Area Center for History of Science
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