| Source: Necrology scrapbooks, Volumes 1-32 Location: Reading Room / St.L. / 920 / N28 | |
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| Last Name: | Erker |
| First Name: | Adolph |
| Middle Name: | P. |
| Address: | 6 Carrswold Dr. |
| Death Year: | 1931 |
| Age: | 78 |
| Volume: | 16 |
| Page: | 28 |
| Remarks: | heir of optical co. |
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