doi:10.7916/d8-eewx-8e08Reminiscences of John F. O'Ryan, 1950O'Ryan, John F. (John Francis), 1874-1961oral historiestextLawyersLocal transit--New York (State)United States History 20th centuryMexico History Revolution, 1910-1920O'Ryan, John F. (John Francis), 1874-1961New York (N.Y.). Police DepartmentEducation; military training; officer in Mexico, 1916; New York City Transit Commissioner, 1922-1926; Police Commissioner, 1934