had been the case since winter 1931–1932, when Abby purchased many of Rivera's pieces at a Museum of Modern Art (MoMA) show. At the time, Rivera was painting a controversial fresco in Detroit titled Detroit Industry, commissioned by the Rockefellers' friend, Edsel Ford, who later became a MoMA trustee. Rivera had recently been kicked out of Communist Party USA for accepting commissions from wealthy patrons, and his commission for Detroit Industry did not help improve the Communist Party's views of him. The writer Daniel Okrent states that a key event in the mural's conception occurred during a luncheon that Abby Rockefeller hosted in January 1932, at which Rivera was a guest. Abby suggested that a mural by Rivera would be a positive addition to Rockefeller Center. The entire Rockefeller family became close friends with Rivera and his wife Frida Kahlo over the next few months, which led to the decision to commission Rivera for the RCA Building's mural. Rivera was given the theme "Man at the Crossroads Looking with Hope and High Vision to the Choosing of a New and Better Future", since John wanted the painting to make people pause and think. The historian Alan Balfour writes that the Rockefellers had full knowledge of Rivera's communist activities, but hired him anyway. Rivera was officially commissioned by Todd, Robertson & Todd, the development agents for the complex. The full commission had planned for Man at the Crossroads to be a three-paneled mural. The two panels to either side, The Frontier of Ethical Evolution and The Frontier of Material Development, would respectively contrast capitalism and socialism. According to Rivera's verbal description of the planned mural, the center panel would depict a person at the literal intersection of these two ideals (namely, the "man at the crossroads"). The RCA Building lobby's wall had such a prominent position within Rockefeller Center that John and Abby Rockefeller's son Nelson had originally wanted Henri Matisse and Pablo Picasso to create the paintings on either side of Man at the Crossroads. Nelson Rockefeller had chosen these artists because he favored their modern style. Rivera's artistic renown made his commission all the more fitting, since it was so prominently located. However, neither of the other two artists were available: Matisse was already completing commissions for Philadelphia's Barnes Foundation at the time, while Picasso never responded to the wire that requested a meeting with "Pierre Picasso". Josep Maria