1Penny Balkin Bach, "To Light up Philadelphia: Lighting, Public Art, and Public Space", Art Journal, Vol. 48, No. 4, Critical Issues in Public Art (Winter, 1989), p324.
2Cher Krause Knight,'Public Art: Theory, Practice and Populism, Wiley-Blackwell;2008 ,p7.
3The Fairmount Parkway; A Pictorial Record of Development from Its First Incorporation in the City Plan in 1904 to the Completion of the Main Drive from City Hall to Fairmount Park in 1919, published by Fairmount Park Art Association, p14.
4American Sculpture in the Metropolitan Museum of Art, Volume 1. A Catalogue of Works by Arttst Born before1865, published by Metropolitan Museum of Art, 1999, p380.
5Michael R. Taylor, "Jacques Lipchitz and Philadelphia", Philadelphia Museum of Art Bulletin, Vol. 92, No, 391/392, p13.
6Andrea Blum, Houston Conwill, Patricia Johanson, Joyce Kozloff, Alan Sonfist, George Sugarman, Athena Tacha, John Pitman Weber and Elyn Zimmerman, "From the Qther Side: Public Artists on Public Art", Art Journal, Vol. 48, No. 4, Critical Issues in Pubtic Art (Winter, 1989), p339.
7Penny Balkin Bach, "To Light up Philadelphia: Lighting, Public Art, and Public Space", Art Journal, Vol. 48, No. 4, Critical Issues in Public Art (Winter, 1989), p328-329.
