| Source: Missouri Pacific Lines Magazine, 1943-1965 (incomplete run) Location: St.L. / 05 / M69p and oversize / St.L. / 05 / M69p | |
 | |
| Last Name: | Bertel |
| First Name: | Donald |
| Middle Name: | J. |
| Volume: | 30 |
| Issue: | 11-12 |
| Date of Publication: | May-June 1957 |
| Page: | 18 |
