The DuBourg Belles Heures, attributed to the Master of Jean Charpentier, Tours (?) 1475-1480.
The illuminations in the picture show Saints Adrian and Sebastian. This late gothic book of ours is a centre piece in the permanent collection of Wheaton College, a wonderful and ecclectic treasury.
To my class on the history of communication technology, the Wheaton Permanent Collection offers the most valuable opportunity to experience communication artefacts like this beautiful manuscript of the time of Louis le Prudent.