Before leaving factory, GE Mazda lamps are put through 11 exacting
tests. Miss Gladys Armstrong demonstrating how it is done in G.E. exhibit at A Century of Progress
Exposition
Title: Before leaving factory, GE Mazda lamps are put through 11 exacting
tests. Miss Gladys Armstrong demonstrating how it is done in G.E. exhibit at A Century of Progress
Exposition
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