P-BRad (Braga) Arquivo Distrital Pastas de fragmentos, 090 (olim Caixa 242, nº 2)
Three inscriptions on fol. Ar. "90" is written in red ink (modern hand) between the two columns. Along the left margin: "Caixa 242, n° 2" written in blue ink (modern hand) and “San Salvador de Donim” (Donim is located 20 km east of Braga). One unreadable later hand inscription was added on Bv, left column, at the end of the responsory "Apparuerunt" (Cantus ID 006110). A second inscription, possibly by the same hand, is found below. Both inscriptions are written reversed with respect to the contents of the page.
P. Avelino de Jesus da Costa referes to this fragment as: "Caixa 242 - 31 – Número 2 – Tombo de Salvador de Dorrim, 1549".
COSTA Avelino Jesus da, Pergaminhos Medievais: Inventário Ideográfico e Bibliográfico (9.vols), Braga, Seminário de Nossa Senhora da Conceição, 1944.