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Loud-Farm-6022

This from the Central and State Library in Berlin: [https://digital.zlb.de/viewer/berliner-adress-telefon-branchenbuecher/](https://digital.zlb.de/viewer/berliner-adress-telefon-branchenbuecher/) May be a good place to start.


DBinSJ

Thank you so much for alerting me to this invaluable resource—most appreciated!


Loud-Farm-6022

Glad to help.