Allegheny Observatory
Part of the University of Pittsburgh. Chartered 1860; located here since 1912. At the original site nearby, Professor Samuel P. Langley conducted experiments that would lead to the first sustained, mechanically powered flight in 1896.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesBarry Lawrence Ruderman Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford Libraries
Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov
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