the following year, while he was making a copy of the map for the Signoria of Venice. The copy was completed by Andrea Bianco. A commemorative medal of the period struck in honor of his cartographic work describes Fra Mauro as "chosmographus incomparabilis". Other work Two copies of maps by Fra Mauro are known to survive. One is a portolan chart in the Vatican Library, (Codice Borgiano V) published by Roberto Almagià in 1944. The other was recognized by Antonio Ratti as a copy signed by Giorgio Callapoda at Candia and dated 1541, of a lost chart by Fra Mauro, sold at auction in Milan in 1984 and now in a private collection, probably in France. Tributes The crater Fra Mauro and associated Fra Mauro formation of the Moon are named after him. The Apollo 13 lunar mission was intended to explore the Fra Mauro formation, but – due to the explosion aboard the spacecraft – Apollo 13's crew had to return to Earth without landing on the Moon. The formation was instead explored by astronauts Alan Shepard and Edgar Mitchell of the Apollo 14 mission in February 1971. Bibliography Cattaneo, Angelo, Il mappamondo di Fra Mauro. Venezia, 1450. San Domenico di Fiesole (Fi), European University Institute, Department of History and Civilization, 2005. Supervisor: Diogo Ramada Curto (EUI); Marica Milanesi (Università di Pavia). Examiners: Patrick Gautier Dalché (IRHT, CNRS, Paris); Anthony Molho (EUI). Cattaneo, Angelo, Fra Mauro's Mappa mundi and Fifteenth-Century Venice. Turnhout: Brepols Publishers (Series "Terrarum Orbis" directed by P. Gautier Dalché), 2011 []. Cattaneo, Angelo, "Migrations et métamorphose des formes et savoirs dans la cartographie œcuménique. Europe - Asie, XIIIe-XVIIe siècle", in Besse, Jean-Marc et Tiberghien, Guy (eds), Opérations cartographiques. Arles, Actes Sud, 2016, pp. 234–259 []. Cattaneo, Angelo, "Dal mappamondo di San Michele al mappamondo di Fra Mauro", in Bouloux, Nathalie; Dan, Anca; Tolias, George (eds), Orbis discipline. Liber amicorum Patrick Gautier Dalché. Turnhout: Brepols, 2016, pp. 713–728. []. Cattaneo, Angelo; "European Medieval and Renaissance Cosmography: A Story of Multiple Voices", Asian Review of World Histories - The Official Journal of The Asian Association of World Historians, Vol. 4, Issue 1 (January 2016), pp. 35–81. [Online ISSN 2287-9811 – Print ISSN 2287-965X] - DOI: http://dx.doi.org/10.12773/arwh.2016.4.1.035 Cattaneo, Angelo (con Nanetti, Andrea; Siew Ann Cheong; Chin-Yew Lin), "Maps as Knowledge Aggregators: from Renaissance Italy Fra Mauro to Web Search Engines", The Cartographic Journal, Vol. 52, Issue 2 (2015), pp.