Photo Credit
http://entertainment.howstuffworks.com/arts/artwork/vincent-van-gogh-final-paintings6.htm
http://entertainment.howstuffworks.com/arts/artwork/vincent-van-gogh-paintings-from-paris4.htm
http://www.fcps.edu/islandcreekes/ecology/cabbage_white.htm
http://www.johnlewis.com/vincent-van-gogh-long-grasses-with-butterflies/p187278
http://maisonneuve.org/post/2012/06/28/grass-and-butterflies-van-gogh-national-gallery/
http://www.theguardian.com/artanddesign/2010/jan/15/van-gogh-his-own-words
http://ukmoths.org.uk/show.php?bf=1643a
http://www.vangoghmuseum.nl/vgm/index.jsp?page=2914&lang=en
http://www.wikipaintings.org/en/vincent-van-gogh/two-white-butterflies-1889
http://en.wikipedia.org/wiki/Pieris_rapae
http://entertainment.howstuffworks.com/arts/artwork/vincent-van-gogh-paintings-from-paris4.htm
http://www.fcps.edu/islandcreekes/ecology/cabbage_white.htm
http://www.johnlewis.com/vincent-van-gogh-long-grasses-with-butterflies/p187278
http://maisonneuve.org/post/2012/06/28/grass-and-butterflies-van-gogh-national-gallery/
http://www.theguardian.com/artanddesign/2010/jan/15/van-gogh-his-own-words
http://ukmoths.org.uk/show.php?bf=1643a
http://www.vangoghmuseum.nl/vgm/index.jsp?page=2914&lang=en
http://www.wikipaintings.org/en/vincent-van-gogh/two-white-butterflies-1889
http://en.wikipedia.org/wiki/Pieris_rapae