You can read PETER AND THE VAMPIRES (Volume One) – which includes the first four stories in the PETER AND THE MONSTERS series – for free!
On the Kindle:
(You don't need a Kindle to read it. Amazon has a built-in reader on their site, or you can go to www.WhatUpKindle.com and download a Kindle app for your computer, smart phone, or iPad.)
On the Nook: