Valentine, P. H., Smith, R., Smith, S. A., & Newton, M. L. G. (1936). Smith memorial playgrounds and playhouses and the Martin school recreation center: Fidelity-Philadelphia trust company, trustee ; A review of two charitable trusts / by Phoebe Hall Valentine. Philadelphia: [Fidelity-Philadelphia trust company].

Valentine, Phoebe Hall., Richard Smith, Sarah A. Smith, and Mrs. Lillie G. Newton. Smith Memorial Playgrounds and Playhouses and the Martin School Recreation Center: Fidelity-Philadelphia Trust Company, Trustee ; A Review of Two Charitable Trusts / By Phoebe Hall Valentine. Philadelphia: [Fidelity-Philadelphia trust company], 1936.

Valentine, Phoebe Hall., Richard Smith, Sarah A. Smith, and Mrs. Lillie G. Newton. Smith Memorial Playgrounds and Playhouses and the Martin School Recreation Center: Fidelity-Philadelphia Trust Company, Trustee ; A Review of Two Charitable Trusts / By Phoebe Hall Valentine. Philadelphia: [Fidelity-Philadelphia trust company], 1936.