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In page Arnold Kramish:

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Kramish became a historian of the atomic era, writing The Griffin - The greatest untold espionage story of World War II, about a spy who passed information to the British about the German nuclear energy project to develop an atom bomb for Nazi Germany, using information he gathered from some 500 interviews.[1] In a review of the book, The Washington Post reviewer expressed his regret that "it is an ironic tribute to this bookish spy's mastery of his trade that the Griffin remains a surprisingly shadowy figure".[2] Though he was frequently contacted as a source for history about the Manhattan Project and the history of the nuclear arms race, Robert Norris of the Natural Resources Defense Council regretted that he was not "more forthcoming and generous in sharing what he knew".[1]