| Source: Program for Washington University commencement, June 20, 1907 Location: Schools Collection, Archives | |
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| Last Name: | Ruebel |
| First Name: | Daniel |
| Middle Name: | Adolph |
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| Source: Program for Washington University commencement, June 20, 1907 Location: Schools Collection, Archives | |
| |
| Last Name: | Ruebel |
| First Name: | Daniel |
| Middle Name: | Adolph |