Public domain
Uncle Sam seeking way to improve theaters for talkies. How to improve theaters for talking motion pictures is a problem now being tackled by the Bureau of Standards. V.L. Chrisler of the Sound Section, who looks like he is imprisoned in stocks, is really studying the "echo effect" in this room and h
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Credit lineUncle Sam seeking way to improve theaters for talkies. How to improve theaters for talking motion pictures is a problem now being tackled by the Bureau of Standards. V.L. Chrisler of the Sound Section. 1930-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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