Check out Throckmorton Fine Art (200 block of E 57th, I think). They specialize in vintage and modern Asian and Latin American work. Also worth a look is Bonni Benrubi's gallery, also on E 57th. She may have large color or digital stuff on display, but she does have a commitment to showing film-based traditional printing. When I was up there in the spring she was showing platinum/palladium prints by a photographer named Jed Devine.