Truman was a page at the 1900 Democratic National Convention, held in Convention Hall. Later, when he was a banker in Kansas City and a farmer in Grandview, he went to piano recitals and operas here. His cousins Myra and Mary Colgan took him to a whole season of opera at Convention Hall. "...I haven't recovered from that seige of Grand Opera yet," he wrote Bess Wallace in late 1911. Truman's unit of the Missouri National Guard and the 129th Field Artillery had its headquarters at Convention Hall in the spring and summer of 1917.
Convention Hall sat on the northeast corner of 13th Street and Central Avenue.