Biotite from selected localities.
||New York State Museum Bull. Nos. 249-250 (Sep-Oct 1921), Magnetic Iron Deposits of SE NY, Clarke, John M.: Index Map, 103.|
||John Betts website: "The old mines and mineral localities on Anthony's Nose, on the East shore of the Hudson River"|
||The Minerals of New York City & Its Environs, New York Mineralogical Club Bull., Vol. 3, No. 1, Manchester, J.G. (1931): 70.|