There is an article about the exhibit: Types With Plenty of Character (NYT) The article includes a multimedia slideshow. Take note of slide 5 of 7 (A detail of the catalog for “Printing for Kingdom, Empire & Republic.”) to see some absolutely beautiful printing.
The exhibit is titled - Printing for Kingdom, Empire & Republic: Treasures From the Archives of the Imprimerie Nationale
The exhibit is at the Grolier Club until February 4, 2012. I highly recommend you look at the Grolier website.