| Source: General Alumni Catalogue of Washington University, 1917 Location: St.L. / 378 / W27g | |
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| Last Name: | Clapper |
| First Name: | William |
| Middle Name: | Louis |
| Address: | 4965 McPherson Ave. |
| Class Year: | 1904 |
| Page: | 292 |
| Source: General Alumni Catalogue of Washington University, 1917 Location: St.L. / 378 / W27g | |
![]() | |
| Last Name: | Clapper |
| First Name: | William |
| Middle Name: | Louis |
| Address: | 4965 McPherson Ave. |
| Class Year: | 1904 |
| Page: | 292 |