www.boatnerd.com
This website has a tremendous amount of
information on shipping, shipwrecks, lighthouses, etc. of the Great Lakes. It even
has a record of the shipwreck of The Bruce Mines near Tobermory:
Ontario Fishing Regulations from the Ministry of Natural
Resources for Lake Huron North Shore (this .pdf document takes a long
time to load (2 minutes at satellite high speed; significantly longer
for 56K dial-up connection)).