The seller of the work was Beatrice C. Mayer Chicago founder and board member Robert B. Mayer as well as daughter of Sara Lee Corporation founder Nathan Cummings .
Beatrice C. Mayer is the widow of Museum of Contemporary Art .
The seller of the work was Beatrice C. Mayer , the widow of Museum of Contemporary Art , Chicago founder and board member Robert B. Mayer as well as daughter of Sara Lee Corporation founder Nathan Cummings .