Eli Thayer of Massachusetts, who had been “aroused very early in the course of the battle in Congress,” incorporated the Massachusetts Emigrant Aid Company with the intent of assisting emigrants who were willing to move west.(i) Details of his “Plan of Operation” found their way into “Horace Greeley’s New York Tribune where, despite the fact that they presented more dreams than facts, managed to be published and to alarm men in western Missouri.(i)
“…It conjured up in their minds the picture of a vast, wealthy, and overpowering abolitionist organization ready to hurl 20,000 hirelings upon their borders.”(i)
On July 29th, Missourians met in Weston, Missouri and formed the “Platte County Self-Defensive Association” “asserting their readiness to go to Kansas ‘to assist in removing any and all emigrants who go there under the auspices of Northern Emigrant Aid Societies.'”(i) Organization of secret societies followed “including the ‘Blue Lodges,’ and ‘Platte County Regulators.’”(i)
(i) David M. Potter and Don E. Fehrenbacher, The Impending Crisis, 1848-1861, (New York: Harper and Row Publishers, Inc., 1976), 199 – 201.