Allegany State Park, extreme SW part of the state.
Letchworth State Park, NW of Dansville. They are found here, but you will be arrested if caught picking them!
Adirondack Mountains, very broad area to hunt, tend to be in "patches" here. You may find a good looking spot, and nothing, then 1/2 mile away, they will be there, kind of spotty.
Join Richard Progovitz in the forays in Spring and summer email Progy@pronetisp.net for more information. You will have to be a member of the Susquehanna Mycological Society. The foray is held in the Shindagin Hollow State Forrest, about 16 miles North of Owega, NY.