Looking for Ornamentation Resources?

I have not needed to add ornaments (trills, mordents, turns, etc) to a piece of music for many years, but suddenly I have a need to do so. Can anyone give me a reliable source for the ornamentation symbols? I need both the notation and the breakdown by note. There are probably a million websites on this, but I would like to cut my search time if you can direct me to a good one.