The Morgan Library & Museum up in New York City (apparently it's an urban center of note somewhere north of Raleigh) is exhibiting a 15th Century Book of Hours commissioned by Catherine of Cleves, and has provided a fascinating online exhibition as well. 

There's a bit about Catherine and her Prayer Book in the Wall Street Journal, here:

Catherine's manuscript was so rich that, in the 19th century, an unscrupulous dealer divided and recombined the pages as two separate volumes. The Morgan Library, which owns both parts, has had the books disbound prior to reassembly in their original order (minus 11 missing miniatures). A superb selection of pages from this spectacular manuscript book is on view through May 2 at the Morgan in "Demons and Devotion: The Hours of Catherine of Cleves."

Presented roughly according to their original sequence, the selected miniatures include familiar scenes from the life of the Virgin and of Christ. But because Catherine commissioned a remarkably large number of illuminations, there are surprising additional images and variations on traditional iconographic schemes. A sequence recounting the complicated history of the wood from which Christ's crucifix was made, for example, starting with the tree that sprouted from Adam's grave, is a cycle not often included in books of hours. Similarly, an expansion of the story of Christ's childhood, illuminating one of the Hours of the Virgin, shows Mary nursing her infant in a nicely appointed Netherlandish kitchen, while Joseph spoons up soup. A related scene presents Joseph at work in his carpentry shop, while Mary weaves and a toddler Christ Child navigates the room in a walker on wheels.