Schiff, Stacy, A Great Improvisation : Franklin, France, and the Birth of America, (New York : Henry Holt & Co., 2005) Schiff describes (p. 159) the French government's authorization for the issuance of such a print in 1778, and Franklin's response to Borel's wish to dedicate the print to him. She illustrates it among the images on the unnumbered pages following page 300.
Sellers, Charles Coleman, Benjamin Franklin in Portraiture (New Haven: Yale University, 1962) pp. 195-197, Pl. 32.
Talbott, Page, ed., Benjamin Franklin: In Search of a Better World (New Haven and London: Yale University, 2005) (companion book to exhibition of same title)
Examples of the engraved print can be found in several public collections, including the National Portrait Gallery, Washington, DC; and the Philadelphia Museum of Art, the Mrs. John D. Rockefeller Collection. It is interesting to note that a copy is also in the collection of one of the descendants of Franklin, with other prints and drawings that have been passed down as having belonged to Franklin.