Coverboards covered with white linen. Front cover has horizontal slits for tapes, at the upper and lower right sides. Off-white paper. Collocation: loose leaves: there are 25 ff and a single sheet (off-white) on the recto side and yellow on the verso, attached to the back cover at the left edge. Final leaf is a thin paper (off-white) on recto side and bright yellow on verso. Loose.