Maps Library

Digital resources:

• USGS 7.5' and 15' quads in PDF format (use the search box on the right side of the page to locate free downloads)
• FAO's vast collection of maps and geo-spatial data

Converters and Calculators:

• Degrees Minutes Seconds to/from Decimal Degrees
• Geographic coordinates to/from UTM coordinates
• Length and distance conversions
• Length of degree of latitude and longitude
• PDF table version of length of degree (from National Geospatial Intelligence)

Definitions and data:

• dictionary of geography-related terms
• National Historical Geographic Information System's aggregated census data and GIS boundary files
• Intute: Science, Engineering and Technology geography portal

Pennsylvania resources:

• PASDA state spatial data clearinghouse
• historic aerial photos of PA at PennPilot
• Centre County's GIS data

Reference maps:

• CIA World Factbook (also includes country profiles and flags)
• UTM zones
• labelled outline maps:
  • Northern Europe
  • Southern Europe
  • Africa
  • Western Asia
  • Central and eastern Asia
  • Pacifica
  • North America
  • South America
  • US - contiguous 48 states
  • US - with Alaska, Hawaii, and Puerto Rico
• blank outline maps:
• US - contiguous 48 states
• US - county level for contiguous 48 states