Hey Rick (we have to stop meeting like this!), I have been obsessed with Oak Island since I got a map in a box of Nabisco Shredded Wheat as a teenager! It hung on my wall for years. The last big expedition was the one in 1972 where they sent down cameras. Rupert Furneaux book -- "The Money Pit Mystery" was the best. National Geographic had a piece about it then. Since that time it has "resisted all attempts" as they say! There is an Oak Island Company that has been trying to raise money for a big new expedition for years (one of our students was a wild island pony person, and would keep me informed about latest developments). The problem is that the whole area is now a mess, and the continual flooding from the access tunnels has made new structures very difficult. The original theory was privateers in the late 1600's, but one recent theory was that the British army did it during the Revolutionary War (so it would fit into this thread). There is a great eerie picture which I lost a long time ago from the photographic expedition. Gee, haven't thought about this in years -- where are my shovel and duckboots!
Yours, Peter T.