FIG. 30. ENGINERERING AND ARCHITECTURE. (Above left) The George Washington Bridge towers as originally planned (Cass Gilbert's design, courtesy of the Port of New York Authority); (above right) Robinson and Steinman's Proposed Liberty Bridge over the Narrows, New York Harbour (from Steinman and Watson, Bridges and Their Builders, G.P. Putnam's Sons, New York, 1941, courtesy of David B. Steinman); (below) the Bronx-Whitestone Bridge; Aymar Embury, II, architect (courtesy of the Triborough Bridge and Tunnel Authority).