A new Kindle ebook, Skeptical About Skeptics: A Selection of Essays from the Website, contains a number of contributions by SPR members. Drawn from the website Skeptical About Skeptics, there are a number of SPR members among the contributors, who are: Robert McLuhan, Dean Radin, Rupert Sheldrake, Brian Josephson, Graham Nicholls, Guy Lyon Playfair, Nancy Zingrone, Ted Dace, Daniel Drasin and Alex Tsakiris.
It is available via Amaon UK: https://www.amazon.co.uk/Skeptical-About-Skeptics-Selection-Website-ebook/dp/B01MUI0SIQ/ref=sr_1_1?s=books&ie=UTF8&qid=1487149251&sr=1-1&keywords=skeptical+about+skeptics
and Amazon US: https://www.amazon.com/dp/B01MUI0SIQ