The major problem of the history of Nagpur State is lack of sources in Marathi as well Pershian and English language. There fore Dr. Prabhakar Gadre D.Litt. an authority of the Maratha history, visited India office London, as well as native archives of India and collected voluminous documents and under took to publish them for future generation in a series on the sources of the Nagpur state now running in more than a dozen volumes. 6 volumes already published. This is next step of English sources of the Nagpur state throwing valuable light from the unpublished as well as little known published sources.