Hey All,
I just bought this e-book over the weekend. It is called Once Upon a Point and Click by David L. Craddock. It can be had for $2.99 on Amazon.
The book is a collection of updated web posts the author made some time ago about the legacy of Sierra On-Line, specifically with a large focus on Roberta Williams and Jane Jensen.
So far it has been a great read. I'd recommend it to any adventure enthusiast. It's a little on the short side but, for $2.99, still worth it.