A newly discovered document has led me to search for a relative in Berlin pre-WW1.

This is what I know:

• name: Moses Izak Guttman
• son of: Samuel Guttman & Rywka nee Messer
• born: Zolkiew 28 April 1881
• address in Berlin 1912: Alte Schönhauser Strasse #33-34 Berlin

I am searching for any documents relating to his life in Berlin before his marriage. 

thank you
Daniella Alyagon