I found an index record for [Frederick William Rest |Rest-20] based on his passport record but I'm not sure where to go from here. He was born in Westphalia Prussia in 1841 and is listed with a naturalization date of September 24, 1872 at the Supreme Court of Wasington D.C. The index record lists N.P & N.R.2.pg385. Is this a record I can get a copy of from the National archives? If so, would I have to go there to get it? Being so old would it have any any information other than what I already have? This is my first immigrant and I'm obviously clueless. Any help would be very much appreciated.