Gustav Edward Walter Koch (Cook)
I am looking for Gustav(e) Edward Walter Koch. He changed his last name to Cook when he became a US citizen.
According to his USA immigration paperwork, he was born 23 April 1881 in Wittenberg, Germany and came over in 1909 with his wife Clara Hedwig Schulz (b1883) with their 2 small children, Hedwig Koch (1905 or 1906) and Harry Koch (1909). They left from Cuxhaven Germany on the President Grant to New York in late 1909, then taking the train to Los Angeles and filing immigration paperwork there in January 1910. He was a well trained waiter according to family stories.
I am looking for any information about Gustav's birth, family, marriage, anything anyone can add or connections that can be made. I believe Clara was born in Pozen, Poland, Hedwig was born in Cuxhaven and Harry born in Hamburg, but cannot provide details other than family stories.
Also, if there are German resources I can search for such records, please advise.