Oldenbarnevelt, [396], [397], [423].
Olier, J. J., [266], [275], [302].
Oliva, Johannes, map, [379].
Onderdonk, Henry W., Hempstead, [441].
Oneida, Lake, [125].
Oneidas, [311].
Onondaga, [126], [280], [282];
books on, [309];
mission, [308];
abandoned, [308].