@JohnBrady Nabokov may well have done at some point, but the fact that he wrote a lot of his work in three languages, sometimes simultaneously would have made it harder, especially since one was Russian.

The primary portion of his process involved researching, writing, and outlining much of his work on index cards which he did almost everywhere. Presumably after this, he dictated his typescripts to Vera. Carl Mydans documented some of his index card work in photos for LIFE Magazine. He talked about some of his process in a '67 interview in The Paris Review.

That review quote is priceless...