Hello Saktipada,

I have copies of both editions of Jungle and Backyard given to me by my grandfather. It is unfortunately out of print but I have included it in the website, https://www.mkrishnan.com (or mkrishnan.org). I am in the process of sorting through and including his CN in the Statesman and his contributions to other newspapers, magazines and journals. The website is not complete yet but any feedback about it is welcome.
Regards, Asha