| Title: | La Operina |
| Author: | Arrighi, Ludovico degli |
| Editor: | Briem, Gunnlaugur |
| Note: | with English translation and commentary |
| Link: | zipped PDF at operina.com |
| Stable link here: | http://onlinebooks.library.upenn.edu/webbin/book/lookupid?key=olbp10932 |
| Subject: | Penmanship |
| Subject: | Alphabets |
| Subject: | Lettering |
| Call number: | Z43.A3 L9 |