Warm thanks to Daniel Nathan Stoddart at Lollardy, who links to Dat Boexken van der Missen "The Booklet of the Mass" (Antwerp, 1507), which he rightly describes as "an excellent look at liturgy in Northern Europe immediately before the Reformation." Woodcuts depict the rubrics of the celebration of the Mass. Recovery and dissemination of this treasure is part of the very fine work of Richard Mammana at Project Canterbury.