Thanks for the newspaper tip, PT. It's easy to forget that not everything will necessarily be found in the Moorehead papers at the Wisconsin Historical Society, though there certainly are a lot of print materials there. Gossip columns and fan magazines are, of course, notoriously unreliable sources, so whenever possible I like to rely on other types on unpublished and published sources.
As for Paul Gregory, don't get me started! It's been one of the great adventures of my life getting to know this fascinating man and a privilege to call him a friend. I don't really feel comfortable in discussing him in a public forum like this, though, especially as he is still very much alive. He will turn 93 on Aug. 27th!
I do have a question for you, though, in this connection: Are you suggesting that a biographer should ignore the experiences and opinions of Moorehead's surviving friends, colleagues, and acquaintances if they are not 100% positive in their recollections?