Exposition métro Guy Môquet, Paris.
<a href="//commons.wikimedia.org/wiki/User:Daniel*D" title="User:Daniel*D">Daniel*D</a> for original photo. <a href="//commons.wikimedia.org/wiki/User:Xhienne" title="User:Xhienne">Xhienne</a> for image retouching.
CC BY-SA 3.0
<a href="//commons.wikimedia.org/wiki/File:Expometro_GM_2472.JPG" title="File:Expometro GM 2472.JPG">Image:Expometro GM 2472.JPG</a> which has been digitally untilted, cropped and changed to greyscale.