This book is actually a collection of selected portions mainly related to Assam which were published in-between 1836 to 1850 in American Baptist Magazine, Boston. These documents can access through Google books and on line libraries. I have just compiled these documents and convert it a book form.
These documents are purely evangelical despite we have found here a socio-economic history of nineteenth-century Assam. Some of the articles and letters were written by native preachers along with the missionaries mentioning their undergoing problems.
Dr Biswajit Das is an Associate professor in Nowgong Girls college, Nagaon, Assam and published books in Assamese. Asomiya Aru Asomar Bhasha, Asomiya Bhashar Bideshi xabda, Samajbhashabignan etc are his published books.