940 (XD) - WV
by: B. Buckley, P. Krusic, E. Cook,
860 (XD) - MO
by: R. Guyette
795 (XD) - MO
by: D.W. Stahle R. Guyette M.D. Therrell M.K. Cleaveland; ITRDB
720 (XD) - WV
by: S. Maxwell; Citation: - more info
294 (XD) - Ball's Falls, Niagra Escarpment, Canada
by: P. Kelly & D. Larson