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American opinion of German unification, 1848-1871

Gazley, John G. (John Gerow), 1895-
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Bismarck's pen : the life of Heinrich Abeken

Abeken, Heinrich, 1809-1872.
London : G. Allen, 1911.

The course of German nationalism : from Frederick the Great to Bismarck, 1763-1867

Schulze, Hagen.
Cambridge ; New York : Cambridge University Press, 1991.

Germany since 1848; history of the present times.

Treue, Wolfgang, 1916-1989.
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Memoirs of Prince Chlodwig of Hohenlohe-Schillingsfuerst

Hohenlohe-Schillingsfürst, Chlodwig, Fürst zu, 1819-1901.
New York : The Macmillan Company; [etc., etc.], 1906.
English ed. supervised by George W. Chrystal ...