foundInBénézit, 1999. — LoC-NA, AKL (CD-ROM), B 1996. — LCAuth. — AKL (CD-ROM). — B 1996
French painter Constant Troyon (1810-1865) by Eugène Louis Pirodon (1819-1882) after a photograph by Étienne Carjat (1704-1788) [Eugène Louis Pirodon / Bibliothèque nationale de France -- Public domain -- http://commons.wikimedia.org/wiki/File:Constant Troyon 1865.jpg]