| Source: Mercantile and Manufacturing Scrapbooks, circa 1948-1977 Location: Reading Room / St.L. / 658 / M533 | |
 | |
| Last Name: | Bethke |
| First Name: | Roland |
| Middle Name: | M. |
| Title: | Dr. |
| Volume: | 2 |
| Page: | 4 |
| Remarks: | in article titled "Four-Story Addition for Ralston Research," 1959 |
