As a commemoration of the Imperial collection of shells in Vienna, the printed folio of Testacea Musei Caesarei Vindobonensis of 1780, is splendid. The eighteen engraved plates, carefully colored <a href="https://blog.library.si.edu/blog/2018/08/15/an-imaginative-world-found-in-a-shell-book/#more-'" class="more-link">more »</a>