View of signal at <a href="https://en.wikipedia.org/wiki/Bowling_Green_(IRT_Lexington_Avenue_Line)" class="extiw" title="w:Bowling Green (IRT Lexington Avenue Line)">Bowling Green</a> station, uptown track, New York City Subway. Signal manufactured by Union Switch &amp; Signal Co.
<a href="//commons.wikimedia.org/w/index.php?title=User:Caseyjonz&amp;action=edit&amp;redlink=1" class="new" title="User:Caseyjonz (page does not exist)">Caseyjonz</a>
<span class="int-own-work" lang="en">Own work</span>