The John Plummer Database of Medieval Manuscripts
United States, Maryland, Baltimore, Walters Art Museum
Calendar page for January.
Book of Hours, fol. 2r
Baltimore, Walters Art Gallery, Medieval and Renaissance Manuscripts, III (1997), pp. 181-186 cat. 239
De Ricci, S., Census of Manuscripts in United States and Canada (1935-1940), I, p. 795 no. 242