Cyanotype. Original image enlarged onto litho film and then contact printed onto litho to yield negative, both developed dilute Dektol. Cyanotype sensitizer is the Mike Ware version. After development, bleached in soda ash solution and toned in instant coffee.
I recognized it inmediatly!
I took the same shot back in the late 80's
There was less clutter then.
My son was at the University there and I visited often.
Nice shot!