53 Pa. Stat. § 16524
The present trustees of the Fairhill estate, under the will of Joseph Parker Norris, and the trustees of Joseph Parker Norris, the younger, under said will, be and they are hereby authorized and empowered to grant, bargain and sell to the commissioners of the said Kensington district, in fee simple, for such consideration as they may think proper, and to be held for public use as a public green and walk forever, and to be used for no other use or purpose whatever, the plot or square of ground now called "Fairhill square," part of the said Fairhill estate, bounded by Lehigh avenue on the north, by Huntingdon street on the south, Fourth street on the east and Apple street on the west; and also the plot or square of ground now called "Norris square," part of the said Fairhill estate, bounded by Susquehanna avenue on the north, Diamond street on the south, Howard street on the east and Hancock street on the west; and Clinton street, as laid down in the plan of the county, running through the same from Susquehanna avenue to Diamond street, is hereby vacated: Provided, That the said commissioners of Kensington shall at all times, hereafter, keep the said two squares of ground properly enclosed and planted with trees, for public squares and walks, for light, air and recreation, forever: And provided further, That a majority of all the persons having a vested interest in the said two squares of ground shall consent to such grant and dedication of the same as aforesaid (and such squares shall never be used for any other purpose whatever, and no building shall ever be erected thereon).
53 P.S. § 16524