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:Willenbrock
First Name:Herman
Photograph:Yes
Volume:I
Issue:23
Date of Publication:May 5, 1928
Page:1, 3