I thought this was cool. Tacoma is fairly well known for their "Court" alleys: Court A, Commerce, Court C, Court D. They're pretty darn wide, and as this image from 1968 shows (Richards Studio D154000-268, from Tacoma Public Library), Court A was wide enough to be striped as two lanes. It still acted as an alley, with stop signs at the major intersections and no signals or even crosswalks. I'm guessing the southbound left lane was primarily parking. Still, definitely never seen this before!
For traffic geeks, have fun counting all the little differences compared to today: one way streets, different markings, lots of double turns...
EDIT: the alley (Court A in this case) is the road second from the bottom-right in the image, and is one-way going towards the bottom-left of the image. The street on the bottom-right edge parallel with the alley is A St, and the image on the other side of the alley (the two way street) is Pacific Ave.
