Speaking of imagined walls, here’s one from 1916, courtesy of the Library of Congress, http://www.loc.gov/pictures/item/2006681433/.
Female employees of the German munitions factory WASAG in their work clothes, 1916. The one on the right seems to have been “conscripted” (zwangsverpflichtet), though it is unclear on what basis. She was also apparently highly skilled insofar as she was a production manager (Produktionsleiterin) of some kind. Source: Haus der Geschichte Wittenberg, “Arbeiterinnen der WASAG Reinsdorf,” https://st.museum-digital.de/index.php?t=objekt&oges=69193
The caption reads, “I’ve decided to accept God, but he has to become Italian.” The German here for “accept,” “gelten lassen,” could also be translated as “allow.” Source: Simpicissimus, May 3, 1926, http://www.simplicissimus.info.
WYCA Poster, ca. 1918, Library of Congress, PPOC, http://www.loc.gov/pictures/item/00652158/
This 1899 map’s legend makes sense within a late-nineteenth-century imperialist framework, and the brutality of its seemingly objectively portrayed vision is unmistakable.
Source: New York Public Library Digital Collections, http://digitalcollections.nypl.org/items/510d47df-fd22-a3d9-e040-e00a18064a99.
Poster from 1919. Source and further details: Library of Congress, PPOC, http://www.loc.gov/pictures/item/2002708879/.
Mars (god of war), late 1918. Source and further details: Library of Congress, PPOC, http://www.loc.gov/pictures/item/2016679640/.