I’ve taken the Greasemonkey script created by Carrick Mundell and modified it to work with the Timberland Regional Library catalog. Right-click and choose Install. (Assuming you’ve already installed Greasemonkey).
With this script when you browse for a book on Amazon the link will show you if it is available in the Timberland Regional Library system. I can’t take much credit for it. I modified a couple lines, that’s it.