The five generation of the Peirce family owned farmland in Kennet Square, Pennsylvania. Over time the family added recreational facilities and opened the land to the public as "Peirce's Park" now Longwood Gardens. This small collection consists of photocopies of correspondence related the genealogy of the Peirce family.

The Peirce family was a Quaker farming family and the original owners of the Longwood Gardens property in Kennett Square, Pennsylvania. Twins Samuel Peirce (1766-1838) and Joshua Peirce (1766-1851) began planting quality trees and shrubs on the property in the early 1800s. Pierre Samuel "P.S." du Pont (1870-1954) was an industrialist, entrepreneur, and philanthropist who purchased the site from the Peirce family in 1906 and established a foundation for an arboretum and botanical gardens called Longwood Gardens in 1954. This item is a genealogical chart of the Peirce family from its colonial ancestry to the grandchildren of Joshua Peirce.

Sarah Dennen (1882-1970) was a descendant of G.W. Peirce, the original owner of Peirce's Park (now Longwood Gardens). The collection includes biographical notes and brief reminiscence of Peirce's Park in the late nineteenth century.