Martyrologium Usuardi monachi
Martyrologium Usuardi monachi, in: Acta Sanctorum, first edition. Jun. VI–VII, edited by Sollerius, J. B. and Bollandus, J., Antwerp, 1715-1717.
♦ (reprinted Venice 1745, AASS2 Jun. VI, pp. i–lxiv and 1–372; VII, pp. 372–779, and Paris 1866, AASS3 Jun. VI) ♦ Calendar of martyrs compiled ca. 875 on the basis of earlier martyrologia, with additions
♦ (reprinted Venice 1745, AASS2 Jun. VI, pp. i–lxiv and 1–372; VII, pp. 372–779, and Paris 1866, AASS3 Jun. VI) ♦ Calendar of martyrs compiled ca. 875 on the basis of earlier martyrologia, with additions