Signatur: II b 26 (2)
Leverkus, Wilhelm:
An authentic interpretation of the guarantee of England and France with reference to the Duchy of Schleswig. Compiled from documentary Sources, By Dr. William Leverkus, translated and edited, with prefatory remarks by Ewing Pye Colquhoun. - London: Stewart & Murray 1848. 23 S.

Originaltitel: Eine authentische Interpretation der Garantieakten Englands und Frankreichs wegen des Herzogthums Schleswig.