A hand written letter from Graf Zeppelin to Herr Uhland, dated 11 January 1907 from the Esener Hof, discussing the quality of fabric for covering the hull of airships, the involvement of The Continental Tyre Co., also comments on the delivery of aluminium for Airship construction, signed; and a copy of Z181 gegen Bukarest, illustrated cover, paperback, Berlin 1916 (2)