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In most territories Canon have a designated supplier for documentation. I looked at your profile but it doesn't specify a country; if by any chance you're in the UK then Robert Scott are the people to talk to, 01869-331741. If you're elsewhere in the world, your local Canon office should be able to point you in the right direction. My experience with Robert Scott has been that they stock manuals for most major models and in most cases it arrives the day after ordering. The prices are fairly reasonable too. If Canon have chosen a similarly conscientious supplier for your area then you should have no problems.