Historic maps of Hopewell Township, c. 1850 to 1905, showing locations and names of properties.
- Click link for more detail on the source
- Click map image for full-size image / PDF
- Hopewell Valley Historic Town Maps
- Hopewell Valley Places – Images, cultural survey documents, maps, and related materials
- The Map Digital Archives and Maps Reference Guides for more information on Hopewell Valley related maps.
Map of Mercer County (1849) – Otley & Keily
- Close-up from Map of Mercer County, New Jersey, Otley and Keily, 1849