found: Teitelman, E. Architecture in Philadelphia, 1974.
found: The Mall in Washington, 1791-1991:t.p. (Richard Longstreth) p. 328 (assoc. prof. of architectural hist. and dir. of the grad. program in historic preservation, George Washington University)
found: City center to regional mall, 1997:CIP t.p. (Richard Longstreth)
found: On the edge of the world, 1998:CIP t.p. (Richard W. Longstreth) data sheet (b. 1946)
found: Sustainability & historic preservation, c2011:t.p. (Richard Longstreth) p. 124 (Prof. of Amer. studies and dir. of the Graduate Program in Historic Preservation at George Washington Univ., past president of the Society of Architectural Historians)
found: Looking beyond the icons, 2015:title page (Richard Longstreth) jacket (Richard Longstreth is Professor of American Studies and Director of the Graduate Program in Historic Preservation at George Washington University)
found: Grauman's Metropolitan Theatre, 1996:back cover (Richard Longstreth)
found: Wikipedia, viewed May 6, 2017(Dr. Richard W. Longstreth; born 4 March 1946, Pasadena; architectural historian; professor, George Washington University since 1983; A.B. University of Pennsylvania 1968; Ph.D. University of California, Berkeley 1977) - https://en.wikipedia.org/wiki/Richard_Longstreth