Could someone advise me on the best way to find my ancestor's naturalization record in Multnomah County? He resided her from about 1906-1963. I do not know the date he applied for naturalization. I tried looking on the microfilm but got confused. Is there a combined index anywhere that will direct me to the proper volume, or can you make a request to some authority? His name is rather common-- Mark Patterson. Thank you, Linda Patterson