Dedication signed: John Newbery. With a final leaf of advertisements. Reproduction of original from the British Library. Available online to authorized PSU users as part of the Medicine, science, and technology series of Eighteenth century collections online.
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. Available via the World Wide Web. Access limited by licensing agreements
Roscoe, J61 (3) English Short Title Catalog, ESTCT110803.