
The Dig ยท Vatican
The Vatican holds the poet’s working manuscript, corrections and all, and it checks out.
Vat.lat.3195 sits in DigiVatLib as a full IIIF scan, folio by folio, no paywall. The text is Petrarch’s Rerum vulgarium fragmenta, better known as the Canzoniere, compiled between 1366 and 1374. Part of it is in the poet’s own hand; the rest was copied by a scribe under his direction, then annotated by Petrarch himself.
This is not a fair copy sent out for show. It is a working document. Ink shifts mid-poem, lines get crossed and rewritten, marginal notes reorder whole sequences. Scholars have matched the handwriting to other verified Petrarch autographs for over a century; nothing here contradicts that identification, and the parchment, ink, and codicology all fit the claimed date range.
What it means is blunt: this is the closest thing we have to watching Petrarch edit himself. The sequence of 366 poems that shaped European lyric verse for the next four centuries did not arrive finished. It arrived scratched out and patched, the same way most real work does.
Caveat worth stating: not every page is autograph, and treating the whole codex as a pure holograph oversells it. The scribal portions matter too, since they show what Petrarch approved rather than what he personally wrote. Keep that distinction and the manuscript holds; blur it and you are back to myth-making.
Source: The Dig / the Vatican archive source