- De Grazia, Emilio. The Life and Works of George Lippard. Ph.D. Dissertation, The Ohio State University, 1969.
- Denning, Michael Mechanic Accents "Chapter 6, Mysteries and Mechanics of the City" London, 1987
- Hart, James D. Oxford Companion to American Literature, 5th ed. Oxford, OUP, 1983.
- Herzberg, Max J. Reader's Encyclopedia of American Literature. Crowell, 1962.
- Myers, Robin. Dictionary of Literature in the English Language, vol 1. Oxford, Pergamon Pr, 1970.
- Oberholtzer, Ellis Paxson. Literary History of Philadelphia. Jacobs, 1906. (on-line text at Google Book Search)
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