Harris Switch Tower
... that the interlocking at the Harris Switch Tower in Harrisburg, Pennsylvania, still simulates train movements using timetables from the early 1940s?
... that the interlocking at the <b id="mwA9Q"><a href="./Harris_Switch_Tower" id="mwA9U" rel="mw:WikiLink" title="Harris Switch Tower">Harris Switch Tower</a></b> in <a href="./Harrisburg,_Pennsylvania" id="mwA9Y" rel="mw:WikiLink" title="Harrisburg, Pennsylvania">Harrisburg, Pennsylvania</a>, still simulates train movements using timetables from the early 1940s?