Robert Caro has won yet another literary prize, this one worth $50,000.

The New-York Historical Society announced Thursday that Caro had won its American History Book Prize for the fourth volume of his Lyndon Johnson series, "The Passage of Power." Caro is a two-time Pulitzer Prize winner and a recipient of the National Book Award. His other books include the Robert Moses biography "The Power Broker."

"The Passage of Power" focuses on the first few weeks of Johnson's presidency, after he had taken office upon the assassination of John F. Kennedy.