Bulletin du Musée Ingres, 1985: Une nouvelle lettre inédite d'Ingres à Calamatta, p. 57 (Luigi Calamatta)

Bénézit, 1976 (Calamatta, Luigi; b. Civita-Vecchia, 1802; d. Milan, 1869; engraver and lithographer)

Union List of Artists Names Online, sitio web, 5 octubre 2017: (Calamatta, Luigi (Italian printmaker and draftsman, 1802-1869)) http://www.getty.edu/vow/ULANFullDisplay?find=Calamatta%2C+Luigi%2C&role=&nation=&prev_page=1&subjectid=500012321

RKD artists, sitio web, 5 octubre 2017: (Luigi Calamatta, male / Italian engraver (printmaker), reproductive printmaker, lithographer, draftsman, director of academy. Born: Civitavecchia, 1801-06-21/1802-06-21; Deceased: Milaan, 1869-03-08) https://rkd.nl/explore/artists/14747

Wikipedia, 5 octubre 2017: (Luigi Antoine Josephe Calamatta (21 june 1801 – 08/03/1869 in Milan) was an Italian painter and engraver. He was born at Civitavecchia, in the Papal States.) https://en.wikipedia.org/wiki/Luigi_Calamatta