It was made by David Sherman Corp. of St. Louis with bourbon they bought from who-knows-where? (HH is always a good guess in these situation, but not a sure thing.) It has been replaced by a 12yo, though the 15yo is still on store shelves. For example, it's scattered around here and there in Middle Tennessee -- probably about 50-50 between the 15yo and 12yo in stores. Obviously, the 15yo will gradually disappear.
Ezra Brooks brands by David Sherman Corp.