The Organ in the Entrance Hall of the Carnegie Mansion, by Cunningham, Bill, 1974, Smithsonian Archives - History Div, The organ in the elaborately paneled front hall of the Carnegie Mansion, today the Cooper-Hewitt National Design Museum, as seen from the grand stair. Carnegie hired renowned New York organist Walter Dale to come to the house to play each morning at 7am, so that he could be awakened to the sounds of his favorite music. The photograph shows preparations for a March 1974 benefit auction..