Looking back at that 1818 document, they did use the term "sour mash" in 1818, though the process described is quite different from that used today, the popularization of which is attributed to Dr. Crow.

Which doesn't change the fact that trying to attribute it to Jacob Beam just because someone within the last few years thought it would be cute to coin the phrase "Old Jake Beam Sour Mash" is a non-starter.

While we are on the subject, it is tragic that there aren't more active hereditary distillers in the U.S. industry.