William Blake drew and painted illustrations for John Milton's nativity ode On the Morning of Christ's Nativity between 1803 and 1815. A total of 16 illustrations are extant: two sets of six watercolours each, and an additional four drawings in pencil.
The dating of the sets is unknown, as is Blake's intended sequence for the illustrations. The two sets of watercolours are known as the "Butts set" and the "Thomas set", after their respective patrons, or as the "Huntington set" and the "Whitworth set" after the Huntington Library and the Whitworth Art Gallery, which now hold the sets in their collections.