| Source: Coal Men of America: A Biographical and Historical Review of the World's Greatest Industry (Chicago: The Retail Coalman, 1918) Location: MO /338.2 / H877c | |
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| Last Name: | Kniffin |
| First Name: | Leonard |
| Middle Name: | D. |
| Birth Date: | 1877 September 30 |
| Page: | 184 |
| Remarks: | resident of Kansas City, Missouri |
