I received the following on Dec 13, 1999 from the Deputy Clerk of the Superior Court of New Jersey, Elizabeth, NJ: All Union County naturalization records from 1857 through 1906 have been transferred to to the New Jersey State Archives. All inquiries encompassing those dates should be forwarded to the addresses below: New Jersey State Archives CN-307 Trenton, NJ 08625 (609) 292-9507 OR Immigration & Nauralization Service 970 Broad Street Newark, NJ 07102