Walter Gropius – Above – Diesel railway locomotive, 1912 � below – Compartment in a Mitropa Sleeping Car, c.1914 Walter Gropius – Above – Diesel railway locomotive, 1912 — below – Compartment in a Mitropa Sleeping Car, c.1914 Gropius Mitropa Sleeping Car 1914 Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading...