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. Truman occasionally derived some income from these enterprises, but none proved successful in the long term. State and city party leaders strongly preferred Truman, and Roosevelt agreed. Truman was sworn in as vice president on January 20, 1945.
1945.
1945.