Searching Google Books with the intent of finding an example of a rotunda, I came across:
http://books.google.ca/books?id=tXCumMOvWRQC
The typeface in which it was set strongly resembled, at least to me, the rotunda of Peter Schöffer. I Googled the book up by its title, and found it was an important book, and also that he was indeed the publisher of that book's first edition.
However, on the "About this book" page, I found that it was not the first edition. Rather, it was an edition of 1479, printed by no less than... Nicolas Jenson. In his famed rotunda, no doubt.


