Back cover (upper): Soil Scientist Luis Hernandez uses a 4 foor auger to examine the soil and collect samples. A description of soil layers is then written and the soil identified and marked on the map.

Back cover (lower): The Wilbraham soil has distinct topsoil and subsoil layers. The red colored horizon at 75 cm is a dense layer that perches water above it in the spring and after heavy rains.