Space Command
... that the 1950s Canadian science-fiction television series Space Command featured William Shatner and James Doohan who later appeared on Star Trek?
... that the 1950s <a href="./Canadian_science_fiction_television" id="mwExo" rel="mw:WikiLink" title="Canadian science fiction television">Canadian science-fiction television series</a> <i id="mwExs"><b id="mwExw"><a href="./Space_Command_(TV_series)" id="mwEx0" rel="mw:WikiLink" title="Space Command (TV series)">Space Command</a></b></i> featured <a href="./William_Shatner" id="mwEx4" rel="mw:WikiLink" title="William Shatner">William Shatner</a> and <a href="./James_Doohan" id="mwEx8" rel="mw:WikiLink" title="James Doohan">James Doohan</a> who later appeared on <i id="mwEyA"><a href="./Star_Trek:_The_Original_Series" id="mwEyE" rel="mw:WikiLink" title="Star Trek: The Original Series">Star Trek</a></i>?