Digital images of sahaj bāṃlā iṃrājī śikshā: Easy Bengali English Siksha, an elementary guide to Bengali and English. Written by Shaktipada Chakraborty, published by Benimadhab Sil's Library, Srabon 1403 [July-August 1998].
"The original material is owned and held by Mr Arun Ghosh. Access enquiries should be directed to Arun Ghosh via the School of Cultural Texts and Records, Jadavpur University, Kolkata.".