United States Official Map c. 1910-20 National Survey Co. huge color wall map(Old Maps, Early 20th Century Maps, North America, United States, Folding Maps, Travel, Tourism). The Official Map of the United States. Published c. 1910 20, Chester, Vermont by the National Survey Co. Folding map. Text in English. Publisher's paper covered boards, wall map size format. Huge color lithographed map. Item is physically old and shows some signs of handling and time. Item is not new or in "new" condition. Binding gently age worn, mostly