The first outbuildings were built of small logs. Few of the early structures remain since they were built with less care than the larger buildings. After 1900, log cribs were seldom built and older outbuildings have mostly been replaced by structures of clapboard and frame (66). Almost all Appalachian log outbuildings are forms of the basic Pennsylvania outbuilding type. These are rectangular with a double-pitch roof and a door in the gable end (67). They are frequently built into the side of a hill and have a projecting roof over the door (68). In 2-level buildings the upper level was of log while the lower level was often made of stone (69). This basic form of architecture has traveled from Neolithic Europe to New York and Pennsylvania, and finally West and South to Appalachia. Corn cribs developed from European "granaries" and were modified for corn storage in America (70).
The Pennsylvanian crib had two cribs with a runway between (71). This style is similar to the double-crib barn, but smaller, with no loft.Frequently, cribs are found with attached sheds to store farm equipment or serve as a pig pen. An old fort of crib, dating from before the Civil War, is the crib with the side driveway (72). At times, there were two drives, one side was sometimes used for storing firewood and seasoning roof shingles (73). Ears of corn were loaded into the corn crib through a narrow opening near the eave of the roof. Some early cribs had hinged roofs to allow for corn loading (74). The ears were retrieved through a small door near the bottom of the front side. Non-poisonous snakes were tolerated since they helped keep the mouse and rat population in the corn crib under control.