This Philadelphia Brownstoner article speculates on the “Fountain Green” location of the old Engel & Wolf brewery. I think it’s fair to say there is unlikely to be a secret trove of 150 year-old lager still buried in Fairmount Park. The brewery was pretty much underneath what is now the brand-new playground at the Smith Playhouse.

And beware: PhilaGeoHistory.org is the biggest time suck you are likely to encounter anytime soon. 200 years worth of maps layerable in Google Maps. It’s amazing.