During the 1940s and early 1950s it was common to see the graffiti on walls and buildings around Calhoun - "Kilroy was Here."

"Kilroy was Here" was an American expression that became popular during World War II, typically seen in graffiti.

Its origin is debated, but the phrase and the distinctive accompanying doodle became associated with GIs in the 1940s: a bald-headed man (sometimes depicted as having a few hairs) with a prominent nose peeking over a wall with his fingers clutching the wall.