| Source: Union Electric Company employee magazines (titled Wire and Pipe, Union Electric Magazine, Union Electric Quarterly, and Union Electric News), 1913-1969 (incomplete run) Location: St.L. / 05 / Un3, Un3b, Un3m | |
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| Last Name: | Henckler |
| First Name: | Mary |
| Middle Name: | Ann |
| Portrait: | yes |
| Date of Publication: | Winter 1956 |
| Page: | 16-17 |
| Publication Title: | Union Electric Magazine |
