Holy shit, glass!
This doesnt relate to development, but I took this photo a couple days ago from Millvale of Lville, thought Id share it.
This sort of relates to development though, Im working with Preservation Pittsburgh, co authoring a book on preservation in the city with one of them and we are currently working on getting the Old Stone Tavern, built in 1783 in the West End on the national register and eventually restore it. Heres some photos I recently took of it and inside it while doing multiple surveys on the building for the register.

Some of the original wood tiles from the 1700s are still intact in the attic in an 1816 addition, which is incredibly rare.

An 1880s Hutchinson styled soda bottle under one of the basement floorboards.

Someone during the Civil War era hammered these US government issued bullet casings into the attic door, spelling out shooting.

Bricked up but still intact 1783 windows with original glass intact, also incredibly rare.

Archaeological remains found in the basement after digging a small plot, dates of the relics date from the 1780's to the 1890s.

18th century square nails in the attic.

A bed frame dating from the late 18th century, could have been used by slaves in the attic. Nobody had been in the attic for a very long time, as tons of 18th century relics were located everywhere.

Corn we found under the floorboards in the attic, when buildings were built during the 1700s people put stuff like this under the floorboards as good luck charms.
Sorry that doesnt really relate to development but thought Id share it. Its pretty cool stuff and the building will look incredible once restored.
Also if you haven't already check out my page which I update multiple times a day on western pa history,
https://www.facebook.com/westernpahistory?ref=tn_tnmn