Chris Locke points to the googler’s WorldCat extension… in your Google search precede a title with “find in a library” and the good Doctor Google will do just that.

Little bit of synchronicity here is that I just tumbled to Book Burro (hat tip to the “tech-teach,” Liz Lawley).

Book Burro is a Web 2.0 extension for Firefox and Flock. When it senses your are looking at a page that contains a book, it will overlay a small panel which when opened lists prices at online bookstores such as Amazon, Buy, Half (and many more) and whether the book is available at your library.

Book Burro is cool and it’s got that WorldCat integration too.