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- “Allegheny County Courthouse” by Brook Ward is licensed under CC BY-NC 2.0
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- “Cathedral of Learning, University of Pittsburgh” by Eric Arnau is licensed under CC BY-NC-SA 2.0
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- “Pittsburgh skyline panorama” by Always Shooting licensed under CC BY 2.0
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- “Oakland Viewed From Flagstaff Hill by Ajblanck – Own work. Licensed under CC BY-SA 3.0 via Wikimedia Commons
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- “Westmoreland County Courthouse” by Joseph A is licensed under CC BY-NC-SA 2.0
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- “Pittsburgh skyline view” by Derek.cashman is licensed under CC BY-SA 3.0 or GFDL, via Wikimedia Commons
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- “The Steel City from 30,000 Feet” by Ron Reiring is licensed under CC BY 2.0
