RIVERA, Diego, (Mexico, 1886-1957): Mural Study for ''The Liberation of the Peon'', in the Ministry of Education, Mexico City, Gouache and Oil on Pressboard, 25'' x 20'' board size, painted image size is 20 3/4'' x 16'', inscription reads, ''The social development of our time is a continuous, accelerated march towards collectivization, and for this reason the necessity for mural painting, the character of which is essentially collective, becomes ever more urgent.'' signed Diego Rivera. Framed, 32'' x 27 1/2'', paperwork includes copies of shipping/export papers, bearing the name of Frances Flynn Paine, personal friend of Rivera, and art advisor to the Rockefeller collection, also included are photos of Rivera with several individuals, one being Frida Kahlo, his wife. Several small flecks due to abrasion, otherwise good condition. This lot is to be sold with a 30 day right to refusal. Written documentation from the expert on Diego Rivera would be required to refute the sale, per the consignors presale conditi