John B. Henderson
I am in the process of doing some research on a Senator from Missouri. According to
http://www.civilwarstlouis.com/History2/henderson.htm, he authored the Thirteenth amendment. I understand that Floyd Shoemaker was in charge of the Missouri Historical Review for quite some time. I would, however, like to find additional information to support or refute the claim -- hopefully, primary sources. If anyone can help, I will greatly appreciate it.