Rittenhouse Rye:

Produced in the tradition of classic Pennsylvania rye whiskies.  Rittenhouse    Bottled-In-Bond 100° is a much acclaimed rye now enjoying a comeback throughout the country as today’s sophisticated whiskey consumer re-discovers classic whiskey styles.

Rittenhouse is produced in the tradition of the classic rye whiskies that were once the preeminent American whiskey style, kept alive through American Prohibition and the subsequent lean years by Heaven Hill Distilleries.

http://heavenhill.com/brand/23