Compact disc.

Duration: 12:30:00.

Read by Allen O'Reilly.

Not long after the death of his father, Charles Koch, then in his early 30s, discovered a letter the family patriarch had written to his sons. "You will receive what seems now to be a large sum of money," Fred Koch cautioned. "It may be either a blessing or a curse." Fred's legacy would become a blessing and a curse to his four sons--Frederick, Charles, and fraternal twins David and Bill--who in the ensuing decades fought bitterly over their birthright, the oil and cattle-ranching empire their father left behind in 1967. Sons of Wichita traces the complicated lives and legacies of these four tycoons, as well as their business, social, and political ambitions. No matter where you fall on the ideological spectrum, the Kochs are one of the most influential dynasties of our era, but so little is publicly known about this family, their origins, how they make their money, and how they live their lives.