『Regional Survey of New York and Its Environs』(3冊セット=第6,7,8巻)1929-1931年 ニューヨークとその近郊の地域調査書
RPA | Regional Plan of New York and Its Environs,Aerial map of the city of New York | Library of Congress,Regional Plan of New York and its Environs - Building the,RPA | Timeline,1919 Official Map Of New York State, National Survey Co