Description: Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Realization of the need to lesson the noise of airples gained from experience with flying machines which date bacl to 1907, led Edgar S. Smith, manual training instrator at Shidler school, to develope a motor muffler for which he has been issued patents."
Date: January 24, 1931
Item Type: Refine your search to only Photograph
Partner: Oklahoma Historical Society