Suchorowski, Marceli G. - Biography, images of works and bibliography of the Russian artist of the 19th century. - http://www.artsbio.com/p11.htm
Sample, Paul (1896 - 1973) - Biographical information and images of this American 20th century landscape artist. - http://www.caldwellgallery.com/bios/samplebio.html
Sparks, Arthur Watson - Biography, images of works and bibliography of the American Impressionist. - http://www.arthurwatsonsparks.com