These 41 letters of instruction ,composed by Sri Harirayji with commentary by his brother Sri Gopisvara ,clearly describe a Vaishnavas duties and give full guidance to adhering to Vaishnava Siddhanta throughout all the challenges presented in life.It is a veritable Bible of the Path of Grace.This particular volume is a word for word translation with an index for each letter and a comprehensive glossary.It also has a unique translation of Sri Harirayjis "Bhava Svarupa Nirupanam."The descriptions of the Lords Form make this essential reading in an enquiry into Vaishnava Dharma.