Thanks, I know the author slightly and am sure neither he nor publisher gave any permission. The copyright statement in the book is very restrictive. I think this is an example of the DMCA, the Digital Millinnium Copyright Act "in action." On the page with the book there's a link with that name at bottom, leading to a form required to be filled out the the copyright holder if he thinks the posted item infringes his copyright. While I'd like to think CTD got permission, what it looks like is that they slapped the e-book up there with the link to that form and if the publisher should somehow happen to find it, they submit the form and oh well, the site will take it down, no big deal. Maybe this is all perfectly legal? Now I have to go read up on the DMCA.