Davis wrote in katharine the great, her 1979 unauthorized biography of katharine graham, owner of the washington post, that the cia ran an "operation mockingbird"
The book also looked at the connections between Philip Graham and the Central Intelligence Agency. According to Davis the owner of the Washington Post was a key figure in Operation Mockingbird, a CIA program to influence the American media. According to Davis, Cord Meyer was Mockingbird's "principal operative".
Davis also argued that Deep Throat was Richard Ober. Later, she claimed the source of this claim was a senior official in the CIA. As she pointed out in Katharine the Great: "The president also began to rely heavily upon the counsel of Richard Ober, Angleton's deputy, the man in the CIA most concerned with domestic counterintelligence, and one of the few whom Nixon trusted."
When the book was originally published in 1979 Katharine Graham (probably under instructions from the CIA) persuaded the publishers William Jovanovich, to pulp 20,000 copies of the book. Davis filed a breach-of- contract and damage-to-reputation suit against Jovanovich, who settled out of court with her in 1983.