| Source: Necrology scrapbooks, Volumes 1-32 Location: Reading Room / St.L. / 920 / N28 | |
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| Last Name: | Erker |
| First Name: | Rose |
| Middle Name: | J. |
| Title: | Mrs. |
| Address: | 19 Crestwood Dr. |
| Death Year: | 1952 |
| Age: | 87 |
| Volume: | 24 |
| Page: | 74 |
| Remarks: | widow of Optical Co. founder |
