The expedition Syl is referring to was the arctic expedition lead by Sir John Franklin. There was some amazing footage and photos of the frozen remains of the crew, still perfectly preserved. Fascinating to look back in time like that! Google Franklin Expedition for details, here is some basic info including links to the photos of these amazing "ice mummies" at the bottom:
http://www.awesomestories.com/history/mummies/franklin-expedition-mummiesGlad this topic is interesting. I hadn't thought of mirrors and clocks being potential sources of hazardous materials, and I'm guessing there are other sources I haven't thought about.
I have a tiny lead toy horse about 1/2" long. As I understand it, it is OK to handle, but advisable to wash your hands before eating, right? Mostly he lives in a little chest in a drawer where he's safely corralled!
On modern hazardous sources there is also a lot of new info available on bisphenol A (BPA) leeching out of plastics when they are heated. I've started microwaving in my ceramic dishes and removing ready-made products from their plastic containers. I also have been replacing plastic kitchen tools, although I still have a few to go. Dishwashers heat up plastic too, so does the heater in your car, the shower heats up your plastic shower curtain... there are just a million places where we're exposed to it.