NPS Geodiversity Atlas—Allegheny Portage Railroad National Historic Site, Pennsylvania (U.S. National Park Service)
Allegheny Portage Railroad National Historic Site: An engineering marvel – U.S. National Parks Service at 100 Years
2020 Weather In Review: Allegheny Portage Railroad National Historic Site (U.S. National Park Service)
Streamside Birds (U.S. National Park Service)
Natural Resource Monitoring at Johnstown Flood National Memorial (U.S. National Park Service)
Allegheny Portage Railroad National Historic Site (U.S. National Park Service)
Allegheny Portage Railroad National Historic Site (U.S. National Park Service)
Allegheny Portage Railroad National Historic Site, VISITOR CENTER
2021 Weather In Review: Allegheny Portage Railroad National Historic Site (U.S. National Park Service)
Forest Health Monitoring in Allegheny Portage Railroad National Historic Site (U.S. National Park Service)