Medieval Manuscripts for Mass and Office: A Guide to their organization and teminologyNo book, at least in English, has struggled with the difficulties of finding texts, chants, or other material in the liturgical manuscripts themselves, until the publication of Medieval Manuscripts for Mass and Office in 1982. Taking for granted the user's ability to read medieval scripts, and some codicological knowledge, Hughes begins with the elementary material without which the user could not proceed. He describes the liturgical year, season,