For demonstration purposes, this product makes use of:
Repackaged TIGER/Line®
Shapefiles from the
U.S. Census Bureau.
Repackaged data from the National Atlas
of the United States of America.
Repackaged Vector Map (VMap) Level 0
data from the National Imagery and Mapping Agency's (NIMA)
DTED®
Level 0 elevation data from NGA.
Note
The use of DTED Level 0 does not indicate endorsement
or approval of those products by either the Secretary of Defense,
the former Defense Mapping Agency, or the National Imagery and Mapping
Agency. Pursuant to the United States Code, 10 U.S.C. 445, the name
of the Defense Mapping Agency, the initials "DMA," the seal of the
Defense Mapping Agency, the name of the National Imagery and Mapping
Agency, the initials "NIMA," the seal of the National Imagery and
Mapping Agency, or any colorable imitation thereof shall not be used
to imply approval, endorsement, or authorization of a product without
prior written permission from the U.S. Secretary of Defense."
Data from The National Map Seamless
Server ("Data available from U.S. Geological Survey, EROS Data Center,
Sioux Falls, SD.")
Data from NASA’s Earth Observatory
For a list of suggested free sources for downloading
map data, see
Map data