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You can also take a look at the images of the Catalan Atlas (14th century). There were not many mythological creatures, but a lot of drawings of non-european peoples (well, drawings of how europeans believed non-europeans were...):

Selection of images

Marc
 
a lots of legend are described in the french RPG Miles Christi (a game in wich you play a templar).
i don't have it here (i'm at work), but i'll give you something (personnal english translation..; in bad english of course:D) soon...