found: Rousseau, Jean-Jacques. Julie, ou La nouvelle Héloïse, ou Lettres de deux amants, habitants d'une petite ville au pied des Alpes, 1824(name not given; 6 extra illustrations in NN copy signed: P.P. Prud'hon del., Copia sculp.)
found: Bib. of the writings of Jean Jacques Rousseau to 1800. v. 1, Julie, ou La nouvelle Héloïse, 1993:page 732 (in footnote to description of plates illustrating 1794 or 1795 edition of Julie, ou La nouvelle Héloïse: Jacques-Louis Copia, 1764-1799, French engraver, born in Landau, died in Paris; known for his engravings of designs by Prud'hon)
found: BnF authorities, Dec. 5, 2013(Copia, Jacques-Louis (1764-1799); born: 1764, Landau, Germany; died: 1799-03-2., Paris, France; etcher and stipple engraver, publisher of prints; addresses in Paris: 1793, rue Boucher, n.6, section du Museum; 1798, rue du Théatre-Français, n. 9)
found: ULAN, Dec. 5, 2013(Copia, Jacques-Louis (German engraver and etcher, 1764-1799)
found: Allgemeines Künstlerlexikon, Dec. 5, 2013(Copia, Jacques Louis; copper engraver; graphic artist; etcher; born 1764, Landau; died March 21 (or 20, or 23), 1799, Paris; moved to Paris when young, active as etcher and engraver from about 1784; genre subjects, vignettes in books, portraits; from 1789, stipple engravings; from beginning of the 1790s, friend of and collaborator with Pierre Paul Prud'hon; also engraved subjects from the French Revolution)
