Philipp Jaffé, 2nd ed. · 1885 · public-domain-original
2 claims in this dataset rest on this source.
A dated register of every papal letter to 1198, genuine and forged, with the forgeries marked. ⚠ THIS IS THE PLAN'S HIGHEST-SEVERITY INTEGRITY ITEM AND IT IS AN OPPORTUNITY, NOT ONLY A RISK: the Pseudo-Isidorian decretals are ninth-century forgeries that circulated for a thousand years as genuine papal law, and Jaffé is where they are flagged. Any row taken from here MUST carry that flag into document.notes and must never render as genuine.