It is indeed Washington Street; per the Chicago Tribune in 1935, Washington Shirt Company had occupied that corner since 1895. Which would make this the infamous Block 37, leveled in the late 1980s for a redevelopment scheme that fell through. It's only now being built up again. If you were standing there today, you would have your back to the plaza in front of Richard J. Daley center, home to the Picasso, and would be looking at the future studios of CBS Channel 2.