Notes
1. M. Paul Friedberg, quoted in Charles A. Birnbaum, “Remembering M. Paul Friedberg,” The Cultural Landscape Foundation, 2025, https://www.tclf.org/remembering-m-paul-friedberg.
2. Housing Act of 1949, Pub. L. No. 81-171, 63 Stat. 413 (1949).
3. Katharine G. Bristol, “The Pruitt-Igoe Myth,” Journal of Architectural Education 44, no. 3 (May 1991): 163–71; and Roger Montgomery, “Pruitt-Igoe: Policy Failure or Societal Symptom,” in The Metropolitan Midwest: Policy Problems and Prospects for Change, ed. Barry Checkoway and Carl Patton (Urbana: University of Illinois Press, 1985), 229–43.
4. On segregation at Pruitt-Igoe and its aftermath, see Bristol, “The Pruitt-Igoe Myth”; and Lee Rainwater, Behind Ghetto Walls: Black Families in a Federal Slum (Chicago: Aldine, 1970), chap. 1. On the Lower East Side, see Marisa Angell Brown, “Radical Urbanism in the Divided City: On M. Paul Friedberg’s Riis Park Plaza (1966),” in Perspecta 50: Urban Divides, ed. Meghan McAllister and Mahdi Sabbagh (Cambridge, MA: MIT Press, 2017), 312–13, drawing on Christopher Mele, Selling the Lower East Side: Culture, Real Estate, and Resistance in New York City (Minneapolis: University of Minnesota Press, 2000), 137.
5. Brown, “Radical Urbanism in the Divided City,” 304, citing The Vincent Astor Foundation, 1964–1968 (New York: Vincent Astor Foundation, n.d.), 6, Vincent Astor Foundation Records, New York Public Library. On Astor’s condition that the housing authority cede control of the design, see M. Paul Friedberg, oral history interview by Charles A. Birnbaum, May 22, 2008, New York, in Pioneers of American Landscape Design Oral History Series (Washington, DC: The Cultural Landscape Foundation, 2009).
6. M. Paul Friedberg and Ellen Perry Berkeley, Play and Interplay: A Manifesto for New Design in Urban Recreational Environment (New York: Macmillan, 1970), 44 (on linked play), and 25, 76. On Riis as Friedberg’s first total play environment, see Gabriela Burkhalter, “The Playground Project,” in 2013 Carnegie International, ed. Daniel Baumann, Dan Byers, and Tina Kukielski (Pittsburgh: Carnegie Museum of Art, 2013), 288.
7. Amy F. Ogata, Designing the Creative Child: Playthings and Places in Midcentury America (Minneapolis: University of Minnesota Press, 2013), esp. chaps. 1 and 4.
8. Peter Walker, quoted in Birnbaum, “Remembering M. Paul Friedberg” (the Barcelona Pavilion comparison dates to 2004); “Tribute: M. Paul Friedberg (1931–2025),” Architectural Record, February 20, 2025; and Katsuhiko Ichinowatari, ed., Process 82: M. Paul Friedberg: Landscape Design (Tokyo: Process Architecture, 1989), a chronological survey opening with Riis Park Plaza, with essays by Jonathan Barnett and William H. Whyte. On the plaza’s wider standing, see also Alison B. Hirsch, “From ‘Open Space’ to ‘Public Space’: Activist Landscape Architects of the 1960s,” Landscape Journal 33, no. 2 (2014): 173–94. On the plaza’s appearance in the popular press, including Life, see Birnbaum, “M. Paul Friedberg Biography,” The Cultural Landscape Foundation, https://www.tclf.org/m-paul-friedberg-biography; the plaza also received a U.S. Department of Housing and Urban Development First Honor Award for design in 1966.
9. “Adventure-Style Playgrounds,” Central Park Conservancy, Plan for Play, http://planforplay.org/history/adventure-style_playgrounds.php: Dattner’s 1966 Adventure Playground “explored the idea of linked play articulated by Friedberg at the Jacob Riis Houses.” Dattner acknowledges Friedberg directly in his own account of the period, Design for Play (New York: Van Nostrand Reinhold, 1969). On Riis in the popular press, including Life, see Birnbaum, “M. Paul Friedberg Biography,” The Cultural Landscape Foundation.
10. Mildred F. Schmertz, “Designing the Spaces in Between,” Architectural Record 143, no. 3 (March 1968): 128; cited in Brown, “Radical Urbanism in the Divided City,” 308.
11. Michael R. Allen, “Incomplete by Design: Reconsidering the Death and Life of Pruitt-Igoe,” in Make New History: 2017 Chicago Architecture Biennial, ed. Mark Lee et al. (Zurich: Lars Müller Publishers, 2017). On the resident population, see Rainwater, Behind Ghetto Walls, chap. 1. The proportions cited here follow Allen’s reading of Rainwater’s survey data; exact figures vary between the 1965–67 survey waves. Former residents corroborate the participatory process: Sylvester Brown Jr., a child at Pruitt-Igoe, recalls being canvassed on what he wanted in the park, while Sharon Hodges describes a place where children had a voice. See Sylvester Brown Jr., “Remembering Pruitt-Igoe,” The Common Reader, Washington University in St. Louis, https://commonreader.wustl.edu/remembering-pruitt-igoe/.
12. Friedberg and Berkeley, Play and Interplay, 89.
13. Robert Adams, “Construction Work Begins on Pruitt-Igoe Amphitheater,” St. Louis Post-Dispatch, August 27, 1967, 3A, cited in Allen, “Incomplete by Design.”
14. Friedberg, quoted in Gabriela Burkhalter, “M. Paul Friedberg,” The Playground Project, https://architekturfuerkinder.ch/m-paul-friedberg/. At Riis the playground had become an environment, but lacked the loose elements children could control themselves.
15. Charles Jencks, The Language of Post-Modern Architecture (New York: Rizzoli, 1977), 9.
16. The Pruitt-Igoe Myth, dir. Chad Friedrichs (Columbia, MO: Unicorn Stencil, 2011).
17. James Trainor, “Reimagining Recreation,” Cabinet, no. 45 (Spring 2012), https://www.cabinetmagazine.org/issues/45/trainor.php.
18. Mariana Mogilevich, The Invention of Public Space: Designing for Inclusion in Lindsay’s New York (Minneapolis: University of Minnesota Press, 2020).