3530944 MS Hunter 242, insert fol.177-178 (pen & ink on paper) by Mexican School, (16th century); Glasgow University Library, Scotland; (add.info.: From the \'Historia de Tlaxcala\' by Diego Mu簽oz Camargo (1529-99). Manuscript originating in post-Spanish conquest Mexico and deals with the social, political, military, religious and cultural history of the Province of Tlaxcala. This calendar wheel was designed by an Indian governor of Tlaxcala, Antonio de Guevara. It shows, 18 months of the Mexican year and the five days without feasts of the 365 day year; the sign for each feast, an explanation of the sign and the name and the correlation with the months of the Christian calendar. A note explains how each month is divided into a 20-day period named after the moon, meztli, which is depicted in the centre of the wheel. ); 穢 University of Glasgow Library .