1. Viterbo.; Title on verso: Viterbium Maps University Of Michigan Public content 1663. Blaeu, Joan, 1596-1673 and Blaeu, Willem Janszoon, 1571-1638. Relief shown pictorially. Cartouche on left is blank. Cartouche on right is blank except for title. Text on verso in Latin titled: Viterbium, print...