Our guest on this installment of StudioTulsa is Robert Caro, the widely celebrated historian and biographer whose detailed, tirelessly researched writings have been awarded the Pulitzer Prize (twice), the National Book Critics Circle Award, the National Book Award, and the Francis Parkman Prize, among other honors. Tomorrow night, Tuesday the 12th, he'll deliver a Presidential Lecture in the Allen Chapman Activity Center here on the TU campus. The lecture begins at 7:30pm and is free to the public. (The Presidential Lecture Series is sponsored by TU's Darcy O'Brien Endowed Chair.) Mr.