Bibliographical sources:
Aleotti, Ioannes Baptista is mentioned in the cartouche of the Ferrara map as its maker, Ort133
Ariosto 133.16-17 ; Furioso: Verse 43, line 32 133.7, 133.20
Blondus 133.19
Boccacio 133.4, 133.8
Giraldus, Lilius Gregorius 133.4, 133.17
Leander, Franciscus 133.9, 133.15, 133.17
Münster 133.19
Pigna : Book 3, 133.8
Priscianus, Peregrinus 133.4, 133.8; : History of Ferrara in 9 Books 133.18
Sabellicus 133.19
Sardus 133.4