as of april 20, 2016, the haas family donated the 42-acre stoneleigh estate in villanova, including its tudor revival mansion, to the natural lands trust. the garden was originally planned by the olmsted brothers, landscape architects john charles olmsted and frederick law olmsted, jr. in a naturalistic style. in developing the garden, the land trust will focus on native plants. molly morrison, president of the trust, announced that the new garden is expected to open freely to the public in late 2017 or 2018. the decorative rabbits which are a popular feature of the estate will remain. in addition, the house is expected to provide a new home for the national organ historical society's library and archives.