The ancient course of the Amu-Daria. (Translation from a German pamphlet by Professor R Lenz of the St Petersburg 'Academie Imperiale des Sciences') Charles Grey, [undated]
Analysis by Lord Tenterden of the papers presented to Parliament respecting Central Asia, 1838-1878: with an outline map showing the principal places referred to Foreign Office, 30 Nov 1878 (3785)