map of the Patapsco Heritage Area (5.1 MB pdf)

map of Trails of Benjamin Banneker Historic Park (1.3 MB jpg)

Maryland DNR's Central Maryland Trail Guides (available for purchase at DNR online)

Baltimore County maps This link sends you to a page
that has several choices for interactive maps. The one titled My
Neighborhood Planimetric/Topographic has streams, aerial photos, property lines, road names and topography. Zoom in to have all the information available. It is set to provide different data at different
scales.

Howard County maps. This link sends you to a page with several map choices for Howard County.