| Source: Official Register of Missouri Troops for 1862 (St. Louis: Adjutant General’s Office, 1863) Location: MO / 9.7 / M69 | |
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| Last Name: | Clark |
| First Name: | Jonas |
| Middle Name: | J. |
| Rank: | Captain |
| Regiment: | Twenty-Seventh Regiment Infantry |
| Page: | 59 |
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