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Creator
- Kaufmann, Edgar J., 1885-19553
- Wright, Frank Lloyd, 1867-19593
- Tafel, Edgar2
- Wright, John Lloyd2
- Austin, Emma Clifton1
- Boell, Alfred N1
- Champenois, J. J1
- Howells, John Mead, 1868-19591
- Kaufmann, Edgar, 1910-19891
- Kaufmann, Liliane, -19521
- Kolff, Cornelius G1
- Mayer, Grace M.1
- Morris, Alletta Nathalie Lorillard Bailey, 1887-19351
- Stearns, Robert B1
- Stokes, I. N. Phelps (Isaac Newton Phelps), 1867-19441
- Western Pennsylvania Conservancy1