My Great aunt, Mollie (Malke) Kaminsky Karlsberg married her husband Julius before emigrating to the United States in the 1890s. I am trying to connect her to one of her sisters, Annie Kaminsky, my grandmother. Because she was married prior to her arrival in the US I have no knowledge of the town she was born in other than she was from Poland. She died in 1940 in Boston but I have no obituary or other information beyond that. Any suggestions as to where to begin my Polish search would be greatly appreciated.