page is dedicated to Soil Series of Pennsylvania.
The photographs are of soils
that have been described within Pennsylvania. The PDF file that
you download contains a picture of the soil with its "Official
Series Description". All soils that fall within the "Range
of Characteristics" listed are called that soil series.
The extent of most of the soils
used for mapping within Pennsylvania occur in other states as well.
Each series is controlled by the state in which the "Type Location"