Bellevue estate, now the Bellevue State Park, is a historic estate that was once a series of farms owned by members of the Orr, Grubb, and Stevenson families and later purchased by William du Pont (1855-1928). The records are a series of deeds covering the conveyance of the Bellevue property from 1782 to 1920. There are also three maps of the estate, including one showing the location of the house and landscaping.

The Grubb family were ironmasters in Lancaster, York, and Dauphin Counties, Pennsylvania, for a period of over 150 years. The records include account books and letters relating to the family's various iron enterprises, including the Codorus, Mananda, Mount Hope, Mount Vernon, and Henry Clay.