First, the book is more than 700 pages. The first and second parts discussed the history of the region, its tribes, and its families, such as: Baly - Bani Attia - Al-Hwaitat - Al-Masa'eed - Bani Uqba - Juhaynah, and others... And families like Al-Muwaylih, Al-Wakeel, Al-Hujairi, Al-Ubaidan, and many others... The book is very rare, and after two months of effort, I was able to find it. The last offer for the book was 200 riyals. Serious buyers only.