| Source: Southwestern Telephone News (St. Louis: Southwestern Bell Telephone Co.), 1917-1955 (incomplete run) Location: St.L. / 05 / So89 | |
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| Last Name: | Zumwalt |
| First Name: | Helen |
| Volume: | 12 |
| Issue: | 9 |
| Date of Publication: | September 1925 |
| Page: | 41-42 |
| Remarks: | Listing of years of service |
