W.173 is another French book from the new website of the Walters Art Museum. This one is Use of Rome, but the calendar, in French, is somewhat non-specific. With only 110 saints consisting of a smattering of Dutch, French and Fransiscans, it has not been localized. As seems to be somewhat common in French books, there are no Vigils in the first half of the year, the first being that for the Nativity of John the Baptist (June 23, see f.3v below).
(DB Id: 200)