Physical copy in Zurich:
ETH-Bibliothek Zürich (ETH-Bibliothek Rämistrasse 101, 8092 Zürich) , Rar 9998
https://www.e-rara.ch/zut/doi/10.3931/e-rara-56149
Online copy:
- https://doi.org/10.3931/e-rara-56149
- https://digi.ub.uni-heidelberg.de/diglit/piranesi1784bd1