| Source: Union Electric Company employee magazines (titled Wire and Pipe, Union Electric Magazine, and Union Electric News), 1920-1930, 1941, 1954, 1956-1967 (incomplete run) Location: Dewey Stacks / Range 17B / Side A | |
 | |
| Last Name: | Zimmer |
| First Name: | John |
| Middle Name: | R. |
| Volume: | 21 |
| Issue: | 14 |
| Date of Publication: | July 30, 1963 |
| Page: | 4 |
| Publication Title: | Union Electric News |
| Remarks: | in list of 25-year employees |
