From the 1965-1966 Missouri Blue Book
U.S. Senate
between 1965 and 1966 <div style="display: none;">date QS:P,+1965-00-00T00:00:00Z/8,P1319,+1965-00-00T00:00:00Z/9,P1326,+1966-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external text" href="http://cdm.sos.mo.gov/cdm/ref/collection/bluebook/id/38486">Official Manual of the State of Missouri 1965 - 1966</a>