more handy links

GIS resources:

Harvard Geospatial Library

http://hgl.harvard.edu/

Harvard Center for Geographic Analysis

http://www.gis.harvard.edu/

Harvard GSD GIS manual

http://www.gsd.harvard.edu/gis/manual/

ESRI Data and Maps

http://www.esri.com/data/data-maps/index.html

USGS data

http://www.usgs.gov/pubprod/data.html

USGS Hydro1K data

http://eros.usgs.gov/#/Find_Data/Products_and_Data_Available/gtopo30/hydro/namerica

National Atlas raw data

http://nationalatlas.gov/atlasftp.html

US Census 2009 TIGER/Line shapefiles

http://www.census.gov/geo/www/tiger/tgrshp2009/tgrshp2009.html

National Transportation Atlas Database 2010

https://www.bts.gov/publications/national_transportation_atlas_database/2010/

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