Mac, a must read about lost people is http://www.nationalgeographic.com/adventure/0111/story,html#story1 this is the Nov'Dec issue so copies may still be availabe of the magazine. This is not a new phenomenon. The Franklin expedition to find the Northwest passage is a classic. It is believed Lead poisoning from early canned foods may have caused group dementa. What we do know is that the crew set off overland from their icebound ship utilising the longboats for sleds. One of the items transported under horrific conditions was the captain's massive desk!