Hello, I am looking for information about my biological grandfather and his family from Michigan USA. I don't know the exact date of birth, but he was in the US Army stationed in Pittsburg or Martinez, CA in 1945-1946. My dad was born in 1946. I do not believe he knew he had a child. My grandmother was Mexican from Pittsburg, CA. I would really like to find his family and some pictures and information. Thank you.