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:Mattick
First Name:Irvin
Middle Name:T.
Title:Professor
Volume:II
Issue:2
Date of Publication:December 15, 1928
Page:4