Through the World Wide Web, or a CD ROM, access is provided to high resolution digital copies of the major historical plates of figures that have been published on the Catocala.   This allows digital enhancements such as cut and paste or changing or removal of background from select images.  Here are examples of the plates that have been digitized:

BEWARE, the downloadable files behind these thumbnails are large!
One of four digitized
 Strecker Catocala Plates 
One of ten digitized 
 Hampson, British Museum, 
Catocala Plates
 
One of ten digitized 
Barnes & McDunnough
Catocala Plates
 
One of six digitized 
Sargent Catocala Plates