Old Crow Bourbon takes its name from Dr. James C. Crow, a pioneer in the field of science who refined the whiskey making process. His was one of the first bourbons to put Sour Mash' on the label, which has since become standard practice. Through the years, you'd find a glass of this bourbon at the tables of United States presidents like Ulysses S. Grant and on the desks of renowned American writers like Mark Twain. This historic brand is one that started em all, making it unlike any of em.