Cézanne’s Sketchbook, 1877/1900.
“Sketchbook with 71 drawings in graphite, pen and brown ink, and watercolor; the sketchbook contains 46 sheets, several which are blank; the end papers, the recto of the first page, and half the verso of the final page were used for notes, lists, and arithmetical figuring; a draft of a letter to the critic Octave Mirbeau is on page II (recto)”
https://www.nga.gov/collection/art-object-page.76219.html