Pennsylvania had the first covered bridge in the United States and has the most of any state in the 21st century. In most places, they were a transition between stone and metal bridges, with the roof and sides protecting the wooden structure from weather. The Sonestown bridge is a Burr arch truss type with a load-bearing arch sandwiching multiple vertical king posts for strength and rigidity. The bridge construction is cruder than the other two surviving covered bridges in Sullivan County, with each Burr arch formed from six straight beams set at angles instead of a smooth curve. (Full article...)
Built on a site long favored by pre-Columbian peoples, Lock Haven began in 1833 as a timber town and a haven for loggers, boatmen, and other travelers on the river or the West Branch Canal. Resource extraction and efficient transportation financed much of the city's growth through the end of the 19th century. In the 20th century, a light-aircraft factory, a college, and a paper mill, along with many smaller enterprises, drove the economy. Frequent floods, especially in 1972, damaged local industry and led to a high rate of unemployment in the 1980s. (Full article...)
... that Peter Herdic, a 19th century Pennsylvania lumber baron, millionaire, and philanthropist, also invented the horse-drawn herdic, an early form of taxicab?
Built to replace Forbes Field, which opened in 1909, the US$55 million ($457 million today) multi-purpose facility was designed to maximize efficiency. Ground was broken in April 1968 and construction, often behind schedule, took 29 months. The stadium opened on July 16, 1970, with a Pirates game. In the 1971 World Series, Three Rivers Stadium hosted the first World Series game played at night. The following year, the stadium was the site of the Immaculate Reception. The final game in the stadium was won by the Steelers on December 16, 2000. Three Rivers Stadium also hosted the Pittsburgh Maulers of the United States Football League and the University of Pittsburgh Panthers football team for a single season each. (Full article...)
The cuisine of Philadelphia was shaped largely by the city's mixture of ethnicities, available foodstuffs and history. Certain foods have become associated with the city.
Invented in Philadelphia in the 1930s, the cheesesteak is the most well known, and soft pretzels have long been a major part of Philadelphia culture. (Full article...)
Image 23Bethlehem Steel in Bethlehem was one of the world's leading steel manufacturers for most of the 19th and 20th century. In 1982, however, it discontinued most of its operations, declared bankruptcy in 2001, and was dissolved in 2003. (from Pennsylvania)
Image 34The locomotive Tioga in Philadelphia in 1848; Pennsylvania was an important railroad center throughout the 19th century. (from History of Pennsylvania)
Image 37One of only two confirmed photos of Abraham Lincoln (sitting in center, facing camera, without his traditional top hat) at Gettysburg a few hours prior to giving the Gettysburg Address at Gettysburg National Cemetery on November 19, 1863. The address, which was only 271 words in length, ranks among the most famed speeches in American history. (from History of Pennsylvania)
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