Source Information

Ancestry.com. Olean's sad tragedy : the story of how police captain Hassett lost his life at the hands of a burglar [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2005.
Original data: Coad, John F.. Olean's sad tragedy : the story of how police captain Hassett lost his life at the hands of a burglar. Olean, N.Y.?: Times Pub. Co., 1909?.