Hello Willie,  Have you researched the families associated with the printers?  I am currently working on my family tree and last name of Neftelberger.  I was wondering if you dug into the Fraenkel family tree.    (re: Naphtali Saloman)
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TracieLyn O'Brien-Rydzewski (Family Name: Neftelberger/Adler)
Lilliesjourney@...
Researching my Jewish family tree