Hi. Do you happen to know if the police academy or the police museum would have a list of all active ny police officers from the 1840's to the 1860's. I am trying to find my g-grandfather's records and the records of his brother. From what I am told his brother was killed by an emotionally disturbed person, who stabbed him during a armed robbery at a grocery store. I tried looking up his name on the police memorial wall, but I don't know if it will be up there because he did not die instantly.