sentences:  Mr. Whipple left the lumber business in 1897, but the lake remained and has been used for recreation ever since (and is today known as Whipple Lake).The state of Pennsylvania purchased the land on January 15, 1904 from the Linden Hall Lumber Company, which was owned by William Whitmer and his sons.The dam was rebuilt in 1928 by the Pennsylvania Bureau of Forestry, a forerunner of the Pennsylvania Department of Conservation and Natural Resources.