Does anyone have any suggestions how to search for my grandfather, Max Kotter, of Telgte,West Phalia, Germany records and/or family? I have his alien registration form stating Max arrived May 9, 1913 into Baltimore, MD on the ship SS Main. We have several letters, written in German, from his mother dated 1919 and 1921, she still lived in Telgte. One letter stated he had a sister, Maria, and a brother, Heinrich who lived in Duesseldorf. Any assitance would be greatly appreciated.