Three volumes: The Nabokov-Wilson Letters 1940-1971 (Weidenfeld, 1979), Selected Letters 1940-1977 (Harcourt, 1989), edited by Dmitri Nabokov and Matthew J. Bruccoli, and Letters to Vera (Penguin, 2014); 264 between Nabokov and Wilson before Eugene Onegin got in the way; 400+ in the Selected most re his work; and hundreds to Vera, dedicatee of many of his books, counsel, confidante and wife.
