The family next moved to Belton, and in 1887 to his grandparents' 600-acre (240 ha) farm in Grandview. During this period, he courted Bess Wallace; he proposed in 1911, but she turned him down. Truman later said he intended to propose again, but he wanted to have a better income than that earned by a farmer. To that end, during his years on the farm and immediately after World War I, he became active in several business ventures, including a lead and zinc mine near Commerce, Oklahoma, a company that bought land and leased the oil drilling rights to prospectors, and speculation in Kansas City real estate. On the street outside the residence, Torresola mortally wounded a White House policeman, Leslie Coffelt. Before he died, the officer shot and killed Torresola.