T. A. O’Leary of Pittsburgh shown in the gas mask, with talking equipment attached, which he invented for persons who must talk while wearing masks as protection against fumes. O’Leary is pointing to the opening from which the wearer’s voice comes.

Digital Commonwealth — Boston Public Library

T. A. O’Leary of Pittsburgh shown in the gas mask, with talking equipment attached, which he invented for persons who must talk while wearing masks as protection against fumes. O’Leary is pointing to the opening from which the wearer’s voice comes.

Associated Press · [ca. November 1936]

RightsCC0 — Public Domain

CollectionDigital Commonwealth — Boston Public Library

[Information from item housing] Gas Masks

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