Effective - 28 Aug 1967
9.035. May 8, Truman Day. — The governor shall issue annually a proclamation setting apart the eighth day of May as "Truman Day" and recommending to the people of the state that the day be appropriately observed in honor of and out of respect for Harry S Truman, the thirty-third president of the United States, a distinguished public servant and the only Missourian ever to be elected to this high office.
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(L. 1967 p. 93)