As a part of the library, the archives is equipped with published and unpublished documents of archival values, that include reports, minutes of meetings, financial documents, correspondences of Church of Scotland (Bengal Mission), London Missionary Society (LMS), Church Missionary Society(CMS), Society of Propagation of Gospel (SPG), Churches in India, Pakistan, Burma and Ceylon (CIPBC), Christa Prem Seva Ashram, Poona. A collection of Biographies including the biography of Bishop Thomas Fanshawe Middleton (1769 – 1822), the founder bishop of Bishop's College are preserved in the archives. A collection of rare books printed in the then Bishop's College press, including the works of Rev. Krishna Mohan Banerjee are also available. A collection of original manuscript, mainly Buddhist works in old Burmese, written on palm leaves, and on old handmade papers are the special attractions of the archives.