The <a href="https://en.wikipedia.org/wiki/Clay_Street_Hill_Railroad" id="mwjA" rel="mw:WikiLink" title="Clay Street Hill Railroad">Clay Street Hill Railroad</a> begins operating the first <a href="https://en.wikipedia.org/wiki/Cable_car_(railway)" id="mwjQ" rel="mw:WikiLink" title="Cable car (railway)">cable car</a> in San Francisco's famous <a href="https://en.wikipedia.org/wiki/San_Francisco_cable_car_system" id="mwjg" rel="mw:WikiLink" title="San Francisco cable car system">cable car system</a>.