This is the fourth volume of the collection of information books about the gubernias and oblasts of the Russian Empire, before 1917. Each volume consists of a historical essay, a chronological list of bibliographical descriptions of information books with comments and annotated contents, and indices. The current volume includes the information book of the central region, Chernozemnyi Center (black earth zone) Book 1: Voronezh and Kursk gubernias. Book 2: Orlov and Tambov gubernias. Book three: Non-black earth zone: In two books. (2.555 kg.)