Glass paperweight advertising the I.M. Yost Milling Company of Hays City, Kansas. Isaac M. Yost (1848-1944) assumed operations of the mill in Hays City in 1878. Over the course of its operations the mill was destroyed by fire and rebuilt three separate times. Yost's company also eventually had elevators in Victoria, Toulon, Ellis, Oglallahm and Collyer. In October of 1907 they also assumed operation of the Wilson Mill, Elevator, and Coal yards. Sometime around 1908 Yost sold his interests in his milling company to J.K. Mullen of the Colorado Milling & Elevator Company, and by 1910 the business was renamed the Hays City Flour Mills. In addition to his milling business, Yost was instrumental in the establishment of the cement plant and company town of Yocemento. Hays City was renamed simply Hays in 1895.