Pottstown Roller Mill
Why it's listed
Beside the Manatawny where it meets the Schuylkill River in Pottstown, the mill began in 1725 as a two-story fieldstone building. Owners stuccoed and enlarged it repeatedly. In 1856 Henry and Jacob H. Gabel added two brick stories and rebuilt it as a 45 by 50 foot mill, and a later five-bay brick addition was joined under a crossing gable roof. Its mill race and dam, with water rights granted in the will of John Potts, still supply the water power that drives the machinery. The nomination treats the mill as the oldest continuing manufacturing business in Pottstown and one of the earliest grain mills in Pennsylvania. It notes use of the mill as a gathering place during an 1729 Indian skirmish and its supply of grain and flour to the Continental Army. Its elevators, still water-powered, are cited as examples of early American industrial engineering.
Significance in brief: The nomination argues the mill is the oldest continuing manufacturing company in Pottstown and is believed to be among the earliest grist mills in Pennsylvania. It also cites its role supplying grain and flour to the Continental Army and its water-powered machinery, including elevators still run by water power.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 74001797, listed October 10, 1974. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence medium).
Key facts
| Address | South and Hanover Sts., Pottstown |
|---|---|
| County | Montgomery County |
| Listed | October 10, 1974 |
| Reference number | 74001797 |
| Resource type | Building |
| Period of significance | 1725-1856 |
| Areas of significance | Industry, Engineering, Architecture, Agriculture |
| Level of significance | Local |
| Status (as stated in the nomination) | Still operating; the mill no longer makes flour but continues to grind corn for feed. |
| Acreage | 1.5 |
| Within district | Old Pottstown Historic District (Additional Documentation) |
| Coordinates | 40.24344, -75.65177 (NPS GIS) |
What listing means for this property
For an income-producing building, listing (individually or as a contributing building in a district) is the gateway to the 20% federal rehabilitation tax credit on qualified rehabilitation costs, often stackable with state credits. Work claiming the credit must follow the Secretary of the Interior's Standards and be approved in advance.
Listing does not restrict a private owner acting without federal money or permits; where federal funding or licensing is involved, Section 106 review applies.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 74001797.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q7235400
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.