The Boston Globe reported that Cuba's Ministry of Culture had given the John F. Kennedy Presidential Library and Museum copies of 3,000 letters and documents Hemingway amassed during his years in Cuba, from 1939 to 1960. Among the documents are corrected proofs of "The Old Man and the Sea" and an alternate ending to "For Whom the Bell Tolls" (The Globe report did not say what that ending was), as well as correspondence with Robert Capa, Marlene Dietrich, Sinclair Lewis, Lillian Ross, Ingrid Bergman and various members of his family. The library is already home to the Hemingway Archive and the Hemingway Room, which was dedicated in 1980, and includes relics like a lion-skin throw rug, journals of his fishing trips and shrapnel from wounds he suffered during World War I.

The defunct DFS agency bugged the Nobel laureate's phone and monitored his movements from 1967 after he moved to Mexico with his family. The authorities suspected the Colombian author of One Hundred Years of Solitude because of his leftist sympathies and friendship with Fidel Castro. Declassified documents published in the newspaper El Universal revealed the DSF kept a bulging file at least up until 1985, after which documents remain secret. It was era of the "dirty war" waged by rightwing Latin American governments against suspected subversives.

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The agency closely monitored the author's mediation between leftist movements and the French president, Francois Miterrand. It also kept tabs on Mexican writers such as Octavio Paz, who won the Nobel prize in 1990, and Salvador Novo.

Most of the papers have never been published and will give new insight into the 21 years Hemingway spent at Finca Vigia in San Francisco de Paula where he wrote some of his greatest works, said Ada Rosa Alfonso Rosales, director of Museo Ernest Hemingway.

Scholars "will be able to study important documents that shed light on the Cuban period of Hemingway, which was very important and not well known by his biographers," she said.

The material includes more than 2,000 documents ranging from manuscripts of some of his works to letters to store receipts, 3,500 photographs and 9,000 books, some 2,000 of which Hemingway was known to have read because he made notes in the margins, she said.

The documents included coded accounts by Hemingway of his exploits searching for German submarines off Cuba's coast during World War Two and letters about his love affair with Italian Countess Adriana Ivancich, believed to be the model for the heroine in his 1950 novel "Across the River and Into the Trees," Alfonso said.