Pittsburgh as a mixed use civic center but no residential

These postcards are pre-1967, because the Mellon Institute for Industrial Research merged with the Carnegie Institute of Technology in 1967. I bought the card because of the description on the back:

Civic Center, Pittsburgh, Pa., showing Mellon Institute in the foreground. This view shows a part of one of the most costly and impressive civic centers to be found anywhere.  From this point of view one looks down on universities, libraries, memorials, art galleries, auditoriums, music halls, hospitals, athletic fields -- and Carnegie Museum.  Along with all this, magnificent churches, theaters, and hotels.

FWIW, Jane Jacobs was critical of the creation of this district--separate from Downtown--in the discussion in Death and Life of Great American Cities, making the point that "mixed primary use" allows for shared parking and other efficiencies.