Kitab al-Jabr wa-al-Muqabalah (The Book of Restoration and Balancing)
of Muhammad bin Musa al-Khwarizmi (AH c. 184–232/c. 800–847 CE) 
Safar 11, 619 AH/April 2, 1222 CE
Copied by Muhammad Sa’id
Black and red ink on paper, h. 25.5 × w. 18 cm 
King Abdulaziz Waqf Libraries Assembly, Al-Madinah al-Munawwarah, MS.4/512

Liber Abaci of Leonardo of Pisa, known as Fibonacci (AH c. 565–c. 648/c. 1170–c. 1250 CE)
8th century AH/14th century CE
Black and red ink on paper with leather binding, h. 27 × w. 20.7 cm
Vatican City, Vatican Apostolic Library, Vat. lat. 4606

Carmen de Algorismo, attributed to Alexander de Villa Dei (d. AH 637–638/1240 CE) 
Paris, France, AH 658–79/1260–80 CE
Black and red ink on parchment with vellum binding, h. 21 × w. 15.3cm
Qatar National Library, HC.MS.2017.0003