The purpose of this paper is to register exegetic (and for the most part unknown) material on the first four chapters of Aristotle’s De interpretatione transmitted in codices vetustissimi, vetusti and recentiores. Scholia, glosses and diagrams presented in this inventory are organized with respect to (a) their place in each manuscript and (b) their relation to the aristotelian text. Whereas texts and diagrams edited here do not represent any critical edition in its traditional sense, effort has been made to point towards continuities and discontinuities regarding their transmission.