Wisconsin
Milwaukee harbor, river mouth, and Menomonee Valley
Tidal mudflat Source-confirmed findsGray area
What you could find
Reported finds from this shoreline.
Sea pottery
Codd and soda bottles
Stoneware ginger beersAlso reported: Heavy brewery output (Blatz, Pabst, Schlitz, druggist and bitters bottles, clay marbles and privy-pit household refuse..
Photos via Wikimedia Commons: NPS (Public domain), Liz West (CC BY 2.0), Partonez (CC BY-SA 4.0).
Why this spot
1890s+ Sanborn-mapped town on Lake Michigan harbor and the Milwaukee, Menomonee, and Kinnickinnic rivers
Major bottle-era port and brewing center; oldest LOC Sanborn edition read is 1894, with dense industrial and residential coverage.
Keep exploring nearby
More spots in this area.