1. Adams, E. (2005). Eakins revealed: The secret life of an American artist. New York, NY: Oxford University Press.
2. American Alliance of Museums. (n.d.). Museum facts. Retrieved from
http://www.aam-us.org/about-museums/museum-facts
3. Armstrong, J. (2010). Aesthetics and painting. British Journal of Aesthetics, 50(2), 218–221.
https://doi.org/10.1093/aesthj/ayq006
.
4. Art Daily. (2017, May 31). Sotheby’s sets record for Edward Hopper at $26.9 M. Retrieved from
http://artdaily.com/news/18390/Sotheby-s-Sets-Record-For-Edward-Hopper-at%2D%2D26-9-M#.WS7M03J1uYk
5. Art Institute of Chicago. (1998). Mary Cassatt: Modern woman. New York, NY: Harry N. Abrams.