Cast-iron call boxes, part of D.C.’s emergency response system from the 19th century through the 1970s, have new life as art and historical markers throughout the city. This one located in the 4200 block of Massachusetts Ave, NW honors World War II Navy WAVES. About 5,000 of these “Government Girls” served at the U.S. Naval Communications Annex and lived at Quarters “D” at nearby Ward Circle.