values yielded an identifiable artistic legacy." During Bing's tenure the Met's artist roster became integrated for the first time. Marian Anderson became the first African American to sing a leading role in 1955. She was soon followed by Robert McFerrin, Gloria Davy, Mattiwilda Dobbs, Leontyne Price, George Shirley, Grace Bumbry, Shirley Verrett, Reri Grist, and many others. He was noted for his preference for European singers and an apparent lack of interest in some leading American performers. Beverly Sills had to wait until after Bing's retirement to make her Met debut in 1975, although Bing later said that not engaging Sills earlier was a mistake. He fostered the careers of many American artists. Roberta Peters, Leontyne Price, Anna Moffo, Sherrill Milnes, and Jess Thomas are just a few that flourished during his time. Bing is also remembered for his stormy relationship with the era's most famous soprano, Maria Callas. After hiring her for the Met with a debut as Norma on opening night in 1956, he famously canceled her contract in 1958 when they could not come to terms regarding the roles she would sing. Bing invited Callas to return to the Met for two performances of Tosca in 1965, the year that turned out to be her final season in opera. After leaving the Met, Bing wrote two books of memoirs, 5000 Nights at the Opera (1972) and A Knight at the Opera (1981). Personal life While living in Berlin, Bing married the Russian ballerina Nina Schelemskaya-Schlesnaya in 1928. They remained together until her death in 1983. They had no children. In January 1987, when Bing was suffering from Alzheimer's disease, he married Carroll Douglass, a 45-year-old woman with a history of mental illness, who then took him, in violation of a court order, on a 10-month-long excursion to Florida, then Anguilla, and eventually to Italy and the United Kingdom, where she had sought to buy Rolls-Royce automobiles and a helicopter to give to the Pope, for whom she had a fixation. The couple were found living in a homeless shelter in Leeds, England, before being coaxed to return to New York by Sir Rudolf's lawyers. By 1989, a lawyer for Bing reported that his estate had been reduced during the marriage from $900,000 to less than $200,000, much of it spent on bodyguards hired to keep Douglass from spiriting him out of New York. For this reason, and