Source: The Broadcaster, December 1, 1927, to April 19, 1932 (newsletter published in St. Louis by the Arkansas-Missouri Plant Department, Southwestern Bell Telephone Company)
Location: Frances L. Dewey Papers, Archives
Last Name:Zumwalt
First Name:E.
Middle Name:M.
Volume:I
Issue:31
Date of Publication:July 7, 1928
Page:4