| 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 | |
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| Last Name: | Appel |
| First Name: | R. |
| Middle Name: | G. |
| Volume: | IV |
| Issue: | 8 |
| Date of Publication: | June 2, 1931 |
| Page: | 4 |
