I recently finished reading The Eyre Affair, by Jasper Fforde. The book has many references to both Martin Chuzzlewit and Jane Eyre. Since I had previously read these two books, I was able to get the full effect of the humor from that story.
As I began reading the sequel, Lost in a Good Book, the story has begun introducing other book references to things I haven't yet read (e.g., Great Expectations, The Trial). I've stopped reading Mr. Fforde's book until I can read those others that he references, but I'm concerned about what books have yet to be referenced in the series.
Are there other books that I need to read to get the most out of the Thursday Next series?