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In page John Steinbeck:

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Documents released by the Central Intelligence Agency in 2012 indicate that Steinbeck offered his services to the Agency in 1952, while planning a European tour, and the Director of Central Intelligence, Walter Bedell Smith, was eager to take him up on the offer.[4] What work, if any, Steinbeck may have performed for the CIA during the Cold War is unknown. Documents released by the Security Service of Ukraine following the Revolution of Dignity in 2014 indicate that the Soviet KGB suspected him of being an American agent when he visited locations within the USSR, including Kyiv, in 1947. Consequently, they watched Steinbeck closely and solicited information about him from their informers.[citation needed]