Brown, H. G. 1., & Brown, M. O. (1949). A directory of the book-arts and book trade in Philadelphia to 1820 including painters and engravers. [New York: New York Public Library].

Brown, H. Glenn 1903-, and Maude O. Brown. A Directory of the Book-arts and Book Trade in Philadelphia to 1820 Including Painters and Engravers. [New York: New York Public Library], 1949.

Brown, H. Glenn 1903-, and Maude O. Brown. A Directory of the Book-arts and Book Trade in Philadelphia to 1820 Including Painters and Engravers. [New York: New York Public Library], 1949.