Martin Caidin
I had the privilege of meeting him in his home in Florida in the early 90's through a girlfriend of mine who was ghost-writing and helping him with his last two books. He had already been diagnosed and was battling his disease. But he was a feisty and alarmingly colorful character with a fascinating home full of treasures and adventures. And that mustache!
There are adventurers and then there are mavericks.
Caidin was a maverick.