Natural Soil Groups of Maryland - This publication examines the various soil groups and how they relate to land use planning in Maryland. In addition it covers the geomorphology of Maryland and evolution of natural soil groups.

Allegany, Anne Arundel, Baltimore County, Calvert, Caroline, Carroll, Cecil, Charles, Dorchester, Frederick, Garrett, Harford, Howard, Kent, Montgomery, Prince George's, Queen Anne's, St. Mary's, 

Somerset, Talbot, Washington, Wicomico, Worcester