Cohen, Jeffrey A. (1994). "Building a Discipline: Early Institutional Settings for Architectural Education in Philadelphia, 1804-1890". Journal of the Society of Architectural Historians. 53 (2). University of California Press: 149. doi:10.2307/990890. JSTOR990890.
jstor.org
Cohen, Jeffrey A. (1994). "Building a Discipline: Early Institutional Settings for Architectural Education in Philadelphia, 1804-1890". Journal of the Society of Architectural Historians. 53 (2). University of California Press: 149. doi:10.2307/990890. JSTOR990890.