Barring letting the cartographer choose his/her own inspiration you could pick a more widely read work such as The Hobbit, mentioned above, or The Lord of the Rings. I'm pretty sure most folks on here will have read those. I've read a lot of sci-fi but very little fantasy myself...Hobbit, LotR, Elric, and that's about it (yeah, I'm missing out but I haven't been all that impressed with most fantasy authors I've read).
M