looks at this area (along the Lehigh River) that became the center of industry and community for Moravians, a Protestant group that migrated to colonial America seeking opportunity and the chance to spread their religious beliefs.

Historic Pittsburgh, an extensive digital resource created at the University of Pittsburgh, offers both an entry point and substantive classroom resources for teachers of American History at various grade and university levels.

This Web site enables access to historic material held by the University of Pittsburgh's University Library System, the Library & Archives at the Heinz History Center, Carnegie Museum of Art, Chatham College Archives, Pittsburgh History & Landmarks Foundation, and Point Park University Archives. The project represents a model of cooperation between libraries, museums and institutions of higher learning in providing centralized access to selections of their respective historic materials.

The books allows teachers to focus on historical currents, social movements and individual historical personalities, both famous and less well-known. Thousands of photographs offer students at all levels opportunities for observation, comparison and inference. The decennial census contains a wealth of information about the occupational, racial, gender, family, and residential structure of a key industrializing region, from pre-Civil War years to the Gilded Age. The chronology captures significant events that took place in Pittsburgh throughout three centuries.

This video defines the sun as the first source of energy in Pennsylvania. Since prehistoric times, energy has defined Pennsylvania's story. Wood fires, lumber, fossil fuels, nuclear power, biomass, windmills and solar panels have all played a part.

This site tells the story of one of the 65 small ironworks operating in southeast Pennsylvania during the American Revolution. The Hopewell Furnace, located in forested hills and valleys along French Creek in Berks County, operated from 1771 to 1883. The furnace was the center of a self-contained hierarchical community of 200-300 people, all of whose work was related to the production of iron.

Many potential, renewable sources of biomass energy exist in Pennsylvania, especially on farms. This video profiles various facilities that make biomass energy, including biodiesel fuel. Biomass energy is important to the economy and the food supply.

This video suggests wind along the ridges of Pennsylvania could provide as much as 25% of the state's electricity while avoiding the creation of tons of CO2; the price for energy from a clean source like wind will come down as the demand goes up.

These scenes show the city of Philadelphia as seen by the Landsat Thematic Mapper (TM) instrument. The river running through the city is the Delaware which defines the boundary between New Jersey and Pennsylvania. In the larger city area image, north is approximately up. The river runs south. Just near the top of the image, upstream of the city and where the Delaware River turns west is the New Jersey city of Trenton. The shortwave infrared (TM band 5), infrared (TM band 4), and visible green (TM band 2) channels are displayed in the images as red, green, and blue respectively. In this combination, barren and-or recently cultivated land appears red to pink, vegetation appears green, water is dark blue, and artificial structures of concrete and asphalt appear dark grey or black.

Pittsburgh (542) with terrain data, x 3 exaggeration. These scenes show Pittsburgh and the countryside around it as seen by the Landsat Thematic Mapper (TM) instrument. Pittsburgh is built around the confluence of the Monongahela and Allegheny Rivers which join in the city to form the Ohio River. The terrain of the area is also shown exaggerated by a factor of three to emphasis terrain features such as the Appalachian Mountains and the river valleys. In the countryside image, north is up, the Monongahela River runs in from the south into the city while the Allegheny comes in from the north and the Ohio runs westward (to the left) out to the scenes edge. The image of the city appears from the perspective of a viewer above the Allegheny River looking southwards towards the city. The shortwave infrared (TM band 5), infrared (TM band 4), and visible green (TM band 2) channels are displayed in the images as red, green, and blue respectively. In this combination, barren and-or recently cultivated land appears red to pink, vegetation appears green, water is dark blue, and artificial structures of concrete and asphalt appear dark grey or black.

Commemorates the most devastating flood in the U.S. in the 19th century. On the wet afternoon of 05/31, 1889, the inhabitants Johnston, Pennsylvania, heard a low rumble that grew to a roar like thunder. Some knew immediately what had happened: the South Fork Dam, after a night of heavy rain, had broken. The break sent a 36-foot wall of water rolling at 40 miles per hour toward Johnstown, a town of 30,000 people. More than 2,200 people were killed.