I'm looking for any record - directory, cemetery, death, etc. - that will help me narrow down the date of death and burial place of Sidney T. Riker, born in NJ or Utica, NY (?) around 1844. He married Catherine Conklin in Verona in 1863 when both were living in Boonton. He is in the 1900 and 1910 census in Morris County, NJ and seems to disappear after 1910. I'm guessing that he died before 1920.
Any help would be greatly appreciated.