and denying him credit for anything done right. Today there is considerable evidence refuting their portrayals of Harding. Yet the myth has persisted." The opening of Harding's papers for research in 1964 sparked a small spate of biographies, of which the most controversial was Russell's The Shadow of Blooming Grove (1968), which concluded that the rumors of black ancestry (the "shadow" of the title) deeply affected Harding in his formative years, causing both Harding's conservatism and his desire to get along with everyone. Coffey faults Russell's methods, and deems the biography "largely critical, though not entirely unsympathetic." Murray's The Harding Era (1969) took a more positive view of the president, and put him in the context of his times. Trani and Wilson faulted Murray for "a tendency to go overboard" in trying to connect Harding with the successful policies of his cabinet officers, and for asserting, without sufficient evidence, that a new, more assertive Harding had emerged by 1923. Later decades saw revisionist books published on Harding. Robert Ferrell's The Strange Deaths of President Harding (1996), according to Coffey, "spends almost the entire work challenging every story about Harding and concludes that almost everything that is read and taught about his subject is wrong." In 2004, John Dean, noted for his involvement in another presidential scandal, Watergate, wrote the Harding volume in "The American Presidents" series of short biographies, edited by Arthur M. Schlesinger Jr. Coffey considered that book the most revisionist to date, and faults Dean for glossing over some unfavorable episodes in Harding's life, like his silence during the 1914 Senate campaign, when his opponent Hogan was being attacked for his faith. Harding has traditionally been ranked as one of the worst presidents. In a 1948 poll conducted by Harvard University, historian Arthur M. Schlesinger Sr. conducted a survey of scholars' opinions of the presidents, ranking Harding last among the 29 presidents considered. He has also been last in many other polls since, which Ferrell attributes to scholars reading little but sensational accounts of Harding. Murray argued that Harding deserves more credit than historians have given: "He was certainly the equal of a Franklin Pierce, an Andrew Johnson, a Benjamin Harrison, or even a Calvin Coolidge. In concrete accomplishments, his administration was superior to a sizable portion of those in the nation's history." Coffey believes "the academic lack of interest in Harding has cost him his reputation, as