[Duanemclemore]

I wish I could link to a great portion of the Eco book Foucault's Pendulum here - it's quite relevant to how we go trying to find meaning in things. If you haven't definitely a novel worth a read.

I'm surprised no one has mentioned From Hell here, which plays with the concept of drawing symbols using lines between landmarks. Alan Moore got a lot of his ideas for that from Iain Sinclair, whose books are well worth a read as well. Specifically, the material Moore references is from Lud Heat iirc.