Oriental Rugs: An Illustrated Lexicon Of Motifs, Materials, & Origins is an expanded second edition of The Oriental Rug Lexicon, by Peter F Stone. It was intended as "a single source for commonly accepted definitions of oriental rug terms" and it's certainly an authoritative dictionary of oriental rugs.
The book covers not only Persian and oriental rugs, but also Indian, European, and Native American examples, making it a comprehensive reference. It also has an extensive bibliography. Around 1,000 colour images are included, though the rugs they illustrate are not dated, and some of the photographs are printed at quite a low resolution.
Oriental Rugs & Carpets: A Comprehensive Study, by Arthur Urbane Dilley, was one of the first histories of oriental rugs in English. Oriental Rugs: A Comprehensive Guide, by Murray L Eiland, is an excellent modern history of the subject. (The second edition of Eiland's book has additional coverage of Indian rugs, and better illustrations; Stone consulted Eiland during the writing of The Oriental Rug Lexicon.)
A History of Textile Art (by Agnes Geijer, illustrated in black and white) and 5,000 Years Of Textiles (a definitive study, edited by Jennifer Harris) are general surveys of textiles and weaving. The Encyclopedia Of Antique Carpets (by Abraham Levi Moheban), published in two volumes, is a comprehensive guide to all areas of carpet production.