" As far as I know, John Chapman never set foot in Geneva, New York, but there is an orchard there where I caught my last and in some ways most vivid glimpse of him. Here on the banks of Lake Geneva, in excellent apple-growing country, a government outfit called the Plant Genetic Resources Unit maintains the world’s largest collection of apple trees. Some 2,500 different varieties have been gathered from all over the world and set out here in pairs, as if on a beached botanical ark. The card catalog of this fifty-acre tree archive runs the pomological gamut from Adam’s Pearmain, an antique English apple, to the German Zucalmagio. In between a browser will find almost every variety discovered in America since the Roxbury Russet distinguished itself in a cider orchard outside Boston in 1645 "

― Michael Pollan , The Botany of Desire: A Plant's-Eye View of the World