The Preparation of Illustrations, by John L. Ridgway 43232
   [Full title: The Preparation of Illustrations for Reports of the United
   States Geological Survey]
   [Subtitle: With Brief Descriptions of Processes of Reproduction]
   [Link: http://www.gutenberg.org/4/3/2/3/43232 ]
   [Files: 43232.txt; 43232-8.txt; 43232-h.htm]

   Thanks to Tom Cosmas from materials scanned in and
   obtained from The Internet Archive.

   Chuck