The Only BOOK which gives you the detailed information about JANGID / SUTHAR samaj. It also has so may usefull informations, ie. History and detailed information of Of LORD Vishwakarama, History and detailed information of Lord ANGIRA, Detailed information about Shree Gyaani Zel Singh (Ex. President of India).
It has also covered the information about Swaami RAM SHUKH DAS Ji Mahaaraaj.Not only this you would also get the detailed information about the Suthar / Jangid Samaj. Their 1444 Shaasans and Goaters.You wont find that much information in any single book.