Fred Waghorne
...that Canadian ice hockey referee and organizer Fred Waghorne was the first to use a whistle to stop game play rather than the customary cowbell, when disruptive fans started bringing their own cowbells?
...that <a href="./Canada" id="mwA-k" rel="mw:WikiLink" title="Canada">Canadian</a> <a href="./Official_(ice_hockey)" id="mwA-o" rel="mw:WikiLink" title="Official (ice hockey)">ice hockey referee</a> and organizer <b id="mwA-s"><a href="./Fred_Waghorne" id="mwA-w" rel="mw:WikiLink" title="Fred Waghorne">Fred Waghorne</a></b> was the first to use a <a href="./Whistle" id="mwA-0" rel="mw:WikiLink" title="Whistle">whistle</a> to stop game play rather than the customary <a href="./Cowbell" id="mwA-4" rel="mw:WikiLink" title="Cowbell">cowbell</a>, when disruptive fans started bringing their own cowbells?