| Source: The Hatchet (Washington University yearbook), 1903-1943 (incomplete run) Location: St.L. / 378 / W27h | |
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| Last Name: | Mateo |
| First Name: | Gregorio |
| Middle Name: | R. |
| Portrait: | yes |
| Home Town: | Manila, P. I. |
| Year: | 1907 |
| Page: | 52 |
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