AP Trail Conservancy At Map Maryland. T. from Pen Mar on the Pennsylvania line to Harpers Ferry W.Va. Contour intervals of 100 feet; scale 1:62500. Revised 2009. Specifications for AP Trail Conservancy: Appalachian Trail Map: Maryland: Manufacturer: AP Trail Conservancy Condition: New Age Group: Adults Quantity: 1 The AP Trail Conservancy: Appalachian Trail Map: Maryland is a quality addition to the AP Trail Conservancy lineup. For more great deals on Books by AP Trail Conservancy please browse our AP Trail Conservancy Books page.