Completed in 1997, Three Important Themes and Sub-Themes in the History and Ecology of the Potomac River Basin, a "white paper" by Philip W. Ogilvie, Ph.D., author of Along the Potomac and other works, has served as a foundation for interpretive planning in the Trail corridor and for establishing thematic connections between and among Trail segments.

Click on this citation to download a copy (2.2MG): Philip W Ogilvie, Ph.D., 1997, Three Important Themes and Sub-Themes in the History and Ecology of the Potomac River Basin.