The National Map, orthoimagery.

Bibliographic Details
Corporate Author:	Geological Survey (U.S.). National Geospatial Program Office
Format:	Government Document eBook
Language:	English
Published:	[Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [2009]
Series:	Fact sheet (Geological Survey (U.S.)) ; 2009-3055.
Subjects:	Orthophotography > United States. Digital mapping.
Online Access:	https://purl.fdlp.gov/GPO/LPS114834

Description
Item Description:	Title from title screen (viewed on July 15, 2009). At head of title: National Geospatial Program Office. "July 2009." Electronic resource.
Physical Description:	4 unnumbered pages : digital, PDF file.
Format:	Mode of access: Internet from the USGS website. Address as of 7/15/09: http://pubs.usgs.gov/fs/2009/3055/pdf/FS2009-3055.pdf ; current access available via PURL.