The Reference Library of the Department was organized in the year 1976 to cater the need of the Research officers for reference purposes at Shillong. It was shifted to Itanagar- the state capital in 1987 and presently house in the annex building of the J. N. State Museum since February 1990
The Library has a collection the more than 10,610 volumes of books , Journals, Reports etc. especially the publication of the Research Department numbering 150 books & Booklets and journal RESARUN since 1975 and rare books on Arunachal Pradesh are available. It is opened for any researches to utilize for the reference purpose. Presently the Reference Library has been completed the library automation and digitization of rare books and journals for the users and developed the library into the vitual library. Reprographic service are also available in the library on the nominal charges.
Dr. K. K. Pandey is the Librarian of the Reference Library since February 1990. The former librarians were Shri D.P. Bhagabati and Mrs Bijoya Bora.