I searched Heritage Quest censuses for you. Closest to Harry was a Henry who was a tailor, could not speak, read or write any English and he was living in Cook County as a boarder with a small family. He was 24 in 1900 and immigrated in 1893. You might try ellisisland.org. If you could give any more pertinent information like your father's name and when he was born, also when your grandfather was born, it might be more fruitful. Joan