Using scanned maps and data from the United States Geological Survey (USGS), Esri developed an interactive tool to explore topographic maps of the US.

The United States Geological Survey (USGS) continues to support the delivery of its digital maps through Avenza Systems Inc.‘s PDF Maps app. It has widened the selection to more than 120,000 US Topo ...

This article was originally published with the title “ The Topographic Maps Prepared by the United States Geological Survey ” in SA Supplements Vol. 65 No. 1691supp (May 1908), p. 347 doi:10. ...

The “Eagle Map of the United States, Engraved for Rudiments of National Knowledge” first appeared in an 1833 atlas published by E.L. Carey and A. Hart of Philadelphia.