The author of a guide to Art Museums of New England here turns his attention to those of New York State, excluding New York City, in a selective survey of art on public view. He covers nine areas in geographic sequence, easterly and southerly from Buffalo to Long Island. The arrangement is alphabetical by location and within location, and the book starts off, by chance, with the leading art museum outside New York City -- the Albright-Knox Gallery in Buffalo. Mr. Faison reviews the art of particular interest in seventy-eight museums, ranging from the world famous to the locally historic. Twenty-five houses, while not intended to provide a survey of New York architecture, point up the main developments from 1649 (the Cutchogue Old House) to the 1960's (the Knox wing of the Albright-Knox Gallery and the Munson-Williams-Proctor Institute at Utica). Of local interest.