Where: Pennsylvania · approx. 40.44, -80.0 (vicinity only)
Why this spot: 1880s+ Sanborn-mapped town on Confluence of the Allegheny and Monongahela forming the Ohio River
What turns up: Pittsburgh was the glass capital of America; look for early free-blown and molded flasks, drug and bitters bottles, and applied-seal whiskey bottles from riverfront dumps and warehouse districts
Access: Gray area.
Pennsylvania: the beds of the navigable Ohio, Allegheny, and Monongahela below the ordinary high-water mark are Commonwealth-owned public land where removing historic artifacts is restricted; the riverbanks and uplands are generally private and need the landowner's permission, and state law protects archaeological sites and unmarked burials.
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.