This document lists 12 image credit URLs from various websites providing photographs and information about art history, printmaking techniques, and specific artists. It includes Flickr photo URLs and links to blogs and articles about prehistoric art, Leonardo Da Vinci's landscapes, printmaking history and techniques, and Chinese and Japanese artworks.

13. IMAGE CREDITS http://www.flickr.com/photos/ivandelcosta/3690765623/sizes/l/in/photostream/ http://www.flickr.com/photos/arnelh/5702340728/sizes/m/in/photostream/ http://www.flickr.com/photos/panbasket/5129990301/sizes/l/in/photostream/ http://www.flickr.com/photos/printtroll/3319135437/sizes/l/in/photostream/ http://www.flickr.com/photos/susanheggestad/3107678695/sizes/z/in/photostream/ http://czechcentermuseumhouston.wordpress.com/2009/07/03/rudolf-ii-prevails-over-brno-gallery/ http://beelinetree.blogspot.com/2010/12/photograms.html http://totallyhistory.com/category/art-history/ http://adamcope.blogspot.com/2008/08/moon-calendars-in-prehistoric-art.html http://adamcope.blogspot.com/2010/03/leonardo-da-vinci-rocky-landscape.html http://robinurton.com/history/printmaking.htm http://www.inkloredesign.com/journal/2010/6/2/printmaking-101-a-history-lesson.html http://www.artneedlepoint.com/chinese-and-japanese-art/songbird-by-ohara-shoson

14. Information Source "The History of Printmaking « Gabriela Martinez." Gabriela Martinez. Web. 05 July 2011. <http://gabrielamartinez.wordpress.com/the-history-of-printmaking/>.