"The original material is owned and held by Rudrajit Mookherjee. Access enquiries should be addressed to Mr Mookherjee via the School of Cultural Texts and Records, Jadavpur University, Kolkata.".
"The original material is owned and held by Satyabati Giri. Access enquires should be directed to Satyabati Giri via the School of Cultural Texts and Records, Jadavpur University, Kolkata. Permission to consult the original books is likely to be granted only in very exceptional circumstances.".