Ground-water Resources of the Brunswick Formation in Montgomery and Berks Counties
- Detailed technical report on the geology and groundwater resources of the Mesozoic rocks in an approximately 347-square-mile area. Includes maps.
- http://www.dcnr.state.pa.us/topogeo/pub/water/w022.aspx

Montgomery County Lands Trust
- Non-profit land conservancy aiding the county's citizens in conserving, protecting and managing the valuable natural assets that abound throughout the region.
- http://www.mclt.org/