sentences:  They later sold it to the Commonwealth of Pennsylvania in 1937 in order to preserve and protect the homestead of Daniel Boone.Restoration began soon afterward and many examples of colonial life in the Oley Valley have been moved to the site of the Daniel Boone Homestead.A circa 1769 blacksmith's shop has been restored at the park as well as the "Bertolet House," an example of early 18th-century Pennsylvania German architecture.