The strength and magic of Bill's graphics are well known to art connoisseurs and collectors all over the world.  Most of his graphics were created in the famous Mourlot Studio in Paris.  Bill's graphic works were produced in limited numbers and then the negatives and printing plates or sandstones were destroyed.  These varied in number and size of the prints for each subject.  When the edition was sold out and demand exceeded supply, the prints acquired the status of "collectors' items".  Bill's works appear in celebrated collections in the U.S. and abroad.