Panel title. Title at top: Delaware and Lehigh Navigation Canal National Heritage Corridor. Includes text, location map, and col. ill. Text and ill. (some col.) on verso. Available also through the Library of Congress Web site as a raster image.
United States. National Park Service; Bucks County Tourist Commission; Delaware And Lehigh Navigation Canal National Heritage Corridor Commission
1990
<a rel="nofollow" class="external free" href="https://www.loc.gov/item/91686021/">https://www.loc.gov/item/91686021/</a>