I searched the site and found nothing that would answer this odd question.
There is a local liquor store whose owner has a half-case of bourbon he inherited from his father 40 years ago. He suspects it was 10 years old at his father's passing so it is roughly 50 years old now. The only information he could recall is that it was made in Joplin MO and the bottles had little or no internal loss.
I had a feeling that he would part with some of this juice but didn't pursue the opportunity because I'd never heard anything about the distillery. Is there any interesting juice that came from Joplin during that era?