Construction of the Woolworth Building at 233 Broadway in 1911. (Photo by New York Public Library)





The Woolworth Building nears completion in 1912. (Photo by New York Public Library)





The cornerstone ceremony for the central building of the New York Public Library, 1902. (Photo by New York Public Library)





Interior work on the library, looking southwest, 1904. (Photo by New York Public Library)





The structural framework of the central building of the New York Public Library, 1905. (Photo by New York Public Library)





Construction workers position a piece of marble on the roof of the central building of the New York Public Library, 1906. (Photo by New York Public Library)





Construction of the cable road on Broadway in 1891. (Photo by New York Public Library)





Workers building the Broadway subway line under Central Park, 1901. (Photo by New York Public Library)





Steel construction in a subway tunnel, 1904. (Photo by New York Interborough Rapid Transit Company/Parsons Collection)





Workers place steel beams for the Metropolitan Tower. (Photo by The Research Libraries, New York/Keystone View Company/Underwood & Underwood)





Skyscrapers start to encroach on Trinity Church, 1905. (Photo by Detroit Publishing Company Collection from The New York Public Library)