The Illustrated Buyer's Guide to Oriental Carpets by J. R. Azizollahoff (1998, Hardcover)

Somewhat dated in pricing, as one would expect (Old pricing still useful in determining what has happened in the last ten years). High quality pictures are very helpful. Solid information regarding carpets could be better if there were more information regarding old rugs (pages 102-104). The narrative in this area wanders and seems to provide tidbits of information whereas a more detailed discussion would have been helpful, particularly in providing help in comparing the merits of rugs from various areas of Iran, etc.