Keywords: United States exploration routes 1501-1844.jpg Map of the United States showing routes of principal explorers from 1501 to 1844 Prepared by Frank Bond of the U S federal government's General Land Office 1907 Printed in U S Geological Survey Bulletin 817 Plate 4 Scale ca 1 17 000 000 Digital version produced by the U S Library of Congress Geography and Map Division JPEG 2000 source image converted to JPEG by User Delirium using http //www ece uvic ca/~mdadams/jasper/ JasPer 1 701 0 since JPEG 2000 is not as of this uploading supported on Commons LOC-map g3701s np000053 PD-USGov Old maps of the United States Maps of the history of the United States |