PHOTO - CHICAGO - PRESERVED ENTRANCE ARCH TO LOUIS SULLIVAN'S BELOVED STOCK EXCHANGE BUILDING (DESIGNED 1893 AND RAZED 1972) - WASHINGTON AND LASALLE - THE IMAGE IS ONE OF THE MOST DRAMATIC OF MANY I'VE SEEN - ON A TERRACE NEXT TO THE ART INSTITUTE - THE ART INSTITUTE HAS LOTS OF BITS AND PIECES OF THE BUILDING ON DISPLAY INSIDE - BUT WHAT A SHAME THE BUILDING COULDN'T HAVE BEEN PRESERVED - 1978 - EDITED FROM AN UNKNOWN PHOTOGRAPHER