National Geographic Society (U.S.)1 map : color; 67 x 92 cmScale 1:5,250,000 or 82.86 miles to one inch ; polyconic projection (W 129°--W 65°/N 49°--N 25°). ; Relief shown by hypsometric tints and spot heights. Depths shown by bathymetric tints.; Includes index to 'Important automobile trails and national highways.'; Indexed.; 'Engraved and printed by Redfield-Kendrick-Odell Co., Inc., New York.'; Insets: Seattle -- Portland -- San Francisco -- Los Angeles -- Chicago -- New Orleans -- Baltimore -- Washington -- Detroit -- Cleveland -- St. Louis -- Pittsburgh -- Philadelphia -- Buffalo -- Greater New York -- Boston. ; In English.9960917904202441ark:/81985/n20r9p44cengNational Geographic SocietyPublicUnited States of AmericaMapsUnited States1923Northwestern University