Ukrainian artist Oleg Shuplyak

John Lennon http://www.johnlennon.com/

Vincent Van Gogh Painting Gallery 4 http://www.vangoghart.org/painting-gallery4.jsp

PEP Web - Sigmund Freud Life and Work, Volume Two: Years of Maturity 1901-1919
http://www.pep-web.org/document.php?id=zbk.046.0001a

The Dali You Didn't Know http://roverarts.com/2011/09/the-dali-you-didnt-know/

Charles Darwin - The Truth? http://www.bradburyac.mistral.co.uk/dar1.html
Writers born this day: Charles Darwin, George Meredith | syracuse.com
http://blog.syracuse.com/shelflife/2008/02/writers_born_this_day_charles.html
Look again, there's more than initially meets the eye: The intricate oil paintings that hide remarkable double images | Mail Online http://www.dailymail.co.uk/news/article-2078106/Look-theres-initially-meets-eye-The-intricate-oil-paintings-hide-remarkable-double-images.html