The present work is a compilation of 231 letters written by Swami Dayanand Sarasvati in 19th Century to his followers, opponents and other scholars contemporary to him. These letters from Swami Dayanand Sarasvati will give you an idea of Dayanand's life style. His way of working and dealing with his subordinates and treatment meted out by him to his rivals and other persons coming into his contact. It is earnestly hopped that the readers and researchers both will find this compilation very significant from the point of view of history of 19th century India in general and Arya Samaj movement in particular.