| Source: Holy Cross Lutheran School Memorial Issue, 1976 Location: St.L. / 372 / H747s | |
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| Last Name: | Koopmann |
| First Name: | Arthur |
| Class Year: | 1912 |
| Page: | 83, 115-116 |
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| Source: Holy Cross Lutheran School Memorial Issue, 1976 Location: St.L. / 372 / H747s | |
| |
| Last Name: | Koopmann |
| First Name: | Arthur |
| Class Year: | 1912 |
| Page: | 83, 115-116 |