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Armstrong Cork,. 1932. “Armstrong's Acoustical Products”. Corkoustic, Ceramacoustic For Acoustical Correction Of Churches, Auditoriums, And Theatres, And Noise-Quieting Of Banks, Schools, Hospitals, Offices, Sunday School Rooms, Factories, And Other Public Buildings. Lancaster, PA.
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Armstrong Cork,. n.d. “Reducing Vibration And Noise”. Nonpareil Cork Machinery Isolation For Reducing The Noise And Vibration Of Fans, Motors, Printing Presses And Machinery Generally. Pittsburgh, PA.
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Armstrong Cork,. n.d. “Armstrong's Vibracork For Lessening Transmission Of Vibration”.