| Source: St. Louis Traffic Club News, June 1951–June 1954 Location: St.L. / 05 / Sa24t | |
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| Last Name: | Helbert |
| First Name: | Mack |
| Portrait: | Yes |
| Last Name, Alternate Spelling: | Helberg |
| Volume: | 3 |
| Issue: | 9 |
| Date of Publication: | November 1953 |
| Page: | 7 |
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