to 1975 he taught at the Art Students League of New York and the Cummington School of Fine Arts. Stamos was also a member of the Uptown Group. A year before his death he donated 43 of his works to the National Gallery of Greece. He is buried in Lefkas, Greece. Rothko Case Mark Rothko chose his friend to be an executor of his estate, however this led to his involvement in the Rothko Case, a major lawsuit and scandal in the art world. A little over a year after his suicide in 1970, Rothko's daughter sued the estate's executors, as well as the Marlborough Gallery, for waste and fraud. Over twelve years of litigation and appeals, it was revealed that many of Rothko's paintings, which had been sold or consigned by his estate to the Marlborough Gallery in Manhattan, were sold at intentionally deflated prices to favored clients while the gallery collected inflated commissions as high as 50 percent, compared with the 30 percent usually charged for an artist of his caliber; the executors, meanwhile, divided the estate's proceeds from Marlborough as their fees. Stamos willingly joined the conspiracy, and was enticed to switch his representation from the André Emmerich Gallery by a more generous contract with the Marlborough. The defendants were found guilty and fined over $9 million; Stamos paid his share of the fine by signing over his house to the Rothko estate, but he was granted life tenancy. While the case did much to enhance Rothko's reputation, it did serious damage to the reputation of both the gallery and Stamos. Another perspective on the case was published in the New York Law Journal in 1988. Stamos never recovered as an artist. Galleries on the level of Emmerich or the pre-scandal Marlborough would not represent his work. The lack of support from top galleries gave collectors a lesser sense of security regarding the value of his work and, possibly with general assessments of his work as an artist, caused his work to be perceived as low, second-tier or third-rank Abstract Expressionism by 1998. Works His Classic Boundaries I, an oil on canvas work () from 1961 has been in the collection of the Art Institute of Chicago since 1962. Its acquisition was funded by the Mary and Leigh Block Fund for Acquisitions. Iberian Sun Box () from 1967 is included in the Governor Nelson A. Rockefeller Empire