Physiography

• Physiography
• Elevation Finder
• Earthquakes

Mineral Resources

• Limestone Geology

Weather

• Precipitation
• Snowfall
• Temperature
• Tornadoes: Locations

Water

• Watersheds

Soil

• Soil Orders

Forests

Wildlife

Recent Census

• Population: Median Age
• Population Density
• County-Level Incomes
• Population: Aged 65 or Older

Cultures

• Ancestry
• Pennsylvania Germans

Education

• School Districts
• Higher Education

Health

Government

• Municipalities
• PA House of Representatives
• PA Senate
• US House of Representatives

Politics

Agriculture

• Farm Preservation

Forestry

Mining/Drilling

• Coal Mining
• Natural Gas Wells

Energy

Transportation

• Airports
• Major Railroads

Manufacturing

Retail/Wholesale

Recreation & Tourism

• State & National Parks
• State & National Forests
• Art Museums
• Transportation Museums

Other Services

• .

History

• Governors of Pennsylvania
• County Histories
• Paleozoic Fossils
• Native Americans
• Military Forts
• Historic Canals
• Mine Disasters
• Former Iron and Steel Sites
• Early Highways
• Historic Floods
• Discoveries

Cities

Environmental Quality

• Abandoned Mines
• Polluted Lakes
• Polluted Streams