Original brown wrappers in very good condition. Pervious owner's name on front. Types of the North American Genera of Birds, AMNH Vol. XXIII, Article XVI, pp. 270-384 and A List of the Genera and Subgenera of North American Birds, with their Types, According to Article 30 of the International Code of Zoological Nomenclature, Vol. XXIV, Article I, pp. 1-50 bound together.