Alben Barkley's final words before he was struck down by a heart attack summed up his long, eventful life: "I have served my country and my people for half a century as a Democrat. I went to the House of Representatives in 1913 and served fourteen years. I was a junior Congressman, then I became a senior Congressman, then I went to the Senate and became a junior Senator, and then I became a senior Senator; and then a Majority Leader in the Senate,...