The Cairo of Naguib Mahfouz
If your are going to read the Cairo Trilogy, you should have this book in your lap as you read it. The pictures provide a beautiful look at the streets and alleys Mahfouz writes about. What makes the book so invaluable, is each photo is linked to a quote from a specific book and gives you a chance to see the world that so inspired Mahfouz. Unfortunately, the book is out of print. The last time I looked it was $68 on Amazon.