Maps showing explorers' routes, trails & early roads in the United States
Subtitle: an annotated list.  Compiled by Richard S. Ladd.
Contributors: Ladd, Richard Stockwell, 1899-
Publisher: For sale by the Superintendent of Documents, U.S. Govt. Print. Off.
Published: 1962
Place of publication: Washington
Language: eng
Number of pages: 137
Subjects: Roads -- United States -- Maps -- Bibliography; Trails -- United States -- Maps -- Bibliography