That's interesting, Rose Mary. The 1860 Blue Springs census has A. J. Walker, 24, farmer and his wife listed so I wonder if the 1860 date is right as he was married when the incident happened. He was the son of James Morgan Walker, a wealthy landowner of Blue Springs according to one online Tree. It's very likely, I think, that the father helped finance the Blue Springs group to protect the people from Jayhawker raids so it follows that his son would act for him in helping organise the group. Im guessing that Quantrill joined the group after Wilson's Creek in fall 1861. Since that period, late 1850's -1862, in Quantrill's life is not well documented he could have been working at times on the freighting trains and knwe some of the Blue Springs boys then. It was common for the young men to go out with the trains in the summer and be farmers for the rest of the year.