Letter, 1881.
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Lesley, J. Peter, 1819-1903
http://n2t.net/ark:/99166/w66n3z1d (person)
When J. Peter Lesley (1819-1903) graduated from the University of Pennsylvania in 1838, he intended for the Presbyterian ministry, but when ill health intervened, he was set off on a path that would make him one of the most influential geologists in 19th century Pennsylvania. In order to help rebuild his strength and restore his health, Lesley accepted an appointment with the first Pennsylvania Geological Survey under the direction of Henry Darwin Rogers and engaged in structural a...
