I’ve read (and heard on NPR) several reviews of Leo Damrosch’s recent book Tocqueville’s Discovery of America, and the review in the New Yorker has a nice detail:
Tocqueville amassed thousands of pages of drafts as he worked on his book, and kept voluminous notes in little books that he folded and stitched by hand.
The picture with this post is from draft report by Alexis de Tocqueville and Gustave de Beaumont on the survey of penal institutions in New York. You can see more here.