Diego Rivera (1886 – 1957) is a Mexican artist mostly known for his mural work.
A mural showing Mexican women making tortilla. Notable, is the young women with their naked tits, while older women are dressed. The men, are assigned off to the field doing dirty or dangerous works.
This painting is called “El maíz”, dated 1940s. The image above is a photo of the actual mural at National Palace , Mexico City. Photo by Sol Kawage, 2006. †
For biographical info, see Wikipedia: http://en.wikipedia.org/wiki/Diego_Rivera
† Used with permission.