High Quality Content by WIKIPEDIA articles! Ralph Thomas Walker, FAIA, (1889–1973) was an American architect, president of the American Institute of Architects and partner of the firm McKenzie, Voorhees, Gmelin; and its successor firms Voorhees, Gmelin Walker, Voorhees, Walker, Foley Smith; Voorhees, Walker, Smith Smith; and Voorhees, Walker, Smith, Smith Haines. Walker is best known for his designs for the Barclay-Vesey Telephone Building (1922-26) and the Irving Trust Building (1928-31).