Here is a review and here is (possibly) an excerpt from Voices within; here are the authors on the book. By the way, the coffee table book entry in wiki forgets to mention (what I think) one important aspect of such books — they cost a fortune — Voices within, for example, costs Rs. 1900! In India, where it is difficult to get such books from the libraries, I do not know how many rasikas will have a chance to read it. Anyway, if you are the lucky one who can afford, or has access to it, you might enjoy.
Here is a write-up on the memoir called Plain speaking; a sudra’s story.
Here is S. Ramachander on RKN’s style (with specific reference to his memoir My days); unfortunately, however, here is a part of the first paragraph of the article which is anything but “simple, easy”, or “delightfully chatty”:
Here he meets a famous writer who has a lifelong handicap. For one who tried unsuccessfully to be one in the formal sense, Narayan can be an example of an English teacher for foreigners, hence the title of this article (and also one of his earliest, partly autobiographical) novels.
But, let that not stop you taking a look at the piece, though!