Lindstrom, Thais S., A Concise History of Russian Literature, Volume 1, New York University Press, 1966.

The first chapter contains a useful account of the
origins of Kievan Rus, and gives an informative
overview of The Song of Igor's Campaign.

Mirsky, D. S., A History of Russian Literature, edited and abridged by Francis J. Whitfield, Alfred A. Knopf, 1973.

A good one-volume history of Russian literature from
the earliest days to the twentieth century.

Thompson, John M., Russia and the Soviet Union, 4th edition, Westview Press, 1998.

The first chapter, "Ancient Russia and the Kievan
State," gives a good overview of the development of
Kievan Rus and its political and social structure.