| Source: St. Louis County Medical Society Bulletin, Volume VII, Number 16 (August 23, 1940) Location: MO / 610.6 / Sa21 | |
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| Last Name: | Johnston |
| First Name: | Peter |
| Middle Name: | R. |
| Title: | Dr. |
| Page: | 250, 252 |
| Remarks: | in list of junior members |
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