By far the fullest guide to Bismarck's life is Horst Kohl's Fiirst Bismarck, Regesten zu einer wissenschaftlichen Biographic (Leipzig, 1891-1892), which contains a record of Bismarck's actions on each day, with references to and extracts from his letters and speeches.
For his life, see the article in the Allgemeine deutsche Biographic. A third son, Karl Friedrich (1734-1799), devoted himself to the study of law, and became professor of law at Jena in 1759.
Other works were Biographic sacree (1825-1826); Histoire sainte et analyse de la Bible (1839); Orthodoxie moderne (1842); Christologie (1858), &c.
See the articles in Herzog-Hauck, Realencyklopadie, and the Allgemeine deutsche Biographic.
See the articles in Herzog-Hauck's Realencyklopddie and the Allgemeine deutsche Biographic; and cf.
There is also the great series of volumes, primary and supplementary, forming the Ailgemeine deutsche Biographic (Leipzig, 1875, fol.), in which the word deutsche is interpreted in the widest possible sense.