N.Y. Real Prop. Acts. Law § 191

§ 191. Dower in lands exchanged. If a husband seized of an estate of\ninheritance in lands, exchanges them for other lands, his widow shall\nnot have dower of both, but she must make her election, to be endowed of\nthe lands given, or of those taken, in exchange; and if her election be\nnot evinced by the commencement of an action to recover her dower of the\nlands given in exchange, within one year after the death of her husband,\nshe is deemed to have elected to take her dower of the lands received in\nexchange.\n