I.W. Harper is a brand that has existed since the 1870s, founded by Isaac Wolf and Bernard Bernheim. The name of their distillery is Bernheim, but the name “Harper” actually comes from the owner of a Kentucky Derby horse the brothers took a liking to. This straight bourbon is a blend of whiskeys aged between 4 and 20 years at the Stitzel-Weller warehouse, with a mash bill of 73% corn, 18% rye and 9% malted barley.