Map of the city of Piacenza, with key of places in bottom left corner and the river Po in bottom right corner.
<br>Etching
late 17th century (?)
<a rel="nofollow" class="external free" href="https://www.britishmuseum.org/collection/object/P_1898-0725-8-1472">https://www.britishmuseum.org/collection/object/P_1898-0725-8-1472</a>