Price, Louise Alcott. "Line and Shadow: The Role of Ink in American Architectural Drawings Prior to 1860." The American Institute of Conservation. The Book and Paper Group Annual [online] 13 (1994). http://http://aic.stanford.edu/sg/bpg/annual/ (19 December 2006).

Price, Louise Alcott. "Line and Shadow: The Role of Ink in American Architectural Drawings Prior to 1860." The American Institute of Conservation. The Book and Paper Group Annual [online] 13 (1994). http://http://aic.stanford.edu/sg/bpg/annual/ (19 December 2006).