An excellent resource for Long Island, New York genealogies is this work published in 1895 by Mary P. Bunker. The title speaks for itself:
"Long Island Genealogies. Families of Albertson, Andrews, Bedell, Birdsall, Bowne, Carman, Carr, Clowes, Cock, Cornelius, Covert, Dean, Doughty, Duryea, Feke, Frost, Haff, Hallock, Haydock, Hicks, Hopkins, Jackson, Jones, Keese, Ketchum, Kirby, Loines, Marvin, Merritt, Moore, Mott, Oakley, Onderdonck, Pearsall, Post, Powell, Prior, Roebins, Rodman, Rowland, Rushmore, Sands, Scudder, Seaman, Searing, Smith, Strickland, Titus, Townsend, Underhill, Valentine, Vanderdonk, Weeks, Whitman, Whitson, Willets, Williams, Willis, Wright, and other families. Being kindred descendants of Thomas Powell."
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