"State Capitol Group, Olympia, Washington. Capitol lake at right."
Some small details in this photo, particularly in the area of the Maple Park Apartments, make me conclude this photo was taken in the early to mid-1960s.
Notice the steam plant on the shore of the Fetid Lake of Doom in the lower right hand corner-- winter quarters for the caimans that now inhabit the lake. Sure, they're telling you to stay out due to some little snail. Yeah. Right.