
Also known as the Mellon–U. S. Steel Building (it was the headquarters of U. S. Steel before the bigger U. S. Steel Building was put up) and now by its street address, 525 William Penn Place.
Harrison & Abramovitz, who did more than any other single firm to shape the skyline of downtown Pittsburgh, were the architects of this slab of metal and glass. It was their first project here; construction started in 1949, and the building opened in 1951. In “The Stones of Pittsburgh,” James D. Van Trump describes it with effective economy: “Large cage-slab with stainless steel sheathing. Envelope characterized by a kind of elegant monotony.”
There is a little blurring in the middle of this composite picture, which old Pa Pitt was not patient enough to try to correct when it came out of the automatic stitcher that way.
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