Albi, Chapter library, sine numero
Selected Canon Law Collections, ca. 500–1234
Durand/Martin, Voyage littéraire de deux Bénédictines 1:2 (Paris 1717; reprinted 1969) p. 67 report that there was a copy of Gratian in the chapter library at Albo. See Nordenfalk, Review of Melnikas p. 336, citing for Durand/Martin, "plus de soixante miniatures d'une beauté charmante" found in this copy today unaccounted for.
