I just found a card for my grandmother's Acknowledgment of Filing Petition For Naturalization. Name and location of court: U. S. District Court, Chicago, Illinois - petition was filed on Dec 2, 1960. It has her name and the petition number. I went to the the website for U.S. District Court in Chicago but cannot find out how to get a copy of the petition papers. Does anyone know where/how I would obtain a copy of these papers? Thanks in advance,