The Memoirs of Grant are a well written and pleasant to read. In some places the campaigns were described in more detail than I was interested, but I learned a lot about the civil war and it's time.
This little story is exceptional. It builds a sense of uncanny terror all the way through, giving you a portrait into a womans descent into madness.
About the only complaint I would make is that the Project Gutenberg preamble took up nearly ten of the twenty two pages in the book. That seems like a waste of space in such a short story.
Also, ironically the storyline involves media (news etc.) in the future being delivered via audio.