Public domain
Chief of Signal Corp. tests new public address system. Washington, D.C., June 27. A new high powered public address system recently procured by the Signal Corps of the Army was tested today by the Chief Signal officer Major Gen. J.O. Mauborgne. Manufactured in accordance with specifications prepared
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Credit lineChief of Signal Corp. tests new public address system. Washington, D.C., June 27. A new high powered public address system recently procured by the Signal Corps of the Army was tested today by the Chi. 1938-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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