I'm finally getting around to reading Wendell Willkie's One World. I've read about this book for years, I've even referenced it in college essays, but I've never actually sat down and read the whole thing. So far, pretty interesting.
For those unfamiliar, Willkie was the 1940 GOP nominee for President. The 1940 election was the closest one for FDR, though he still won handily. FDR saw that Willkie would make for a useful domestic ally in the coming war, so he frequently met with and discussed policy in the hope that Willkie would influence other Republican politicians, which he did.
In 1943, FDR asked Willkie if he'd be willing to travel around the globe to meet with allies and other prominent people as his envoy. Willkie agreed and One World is his account of those travels. In it he also outlines his ideas for what he believed the United Nations (which at this time referenced the allied powers) should evolve into after the war. There was even talk that FDR wanted him to be the first General Secretary of what would become the United Nations we know today, but alas Willkie died in 1944.