Instruct: Classify the given review as either positive or negative.
Query: The Classic Guide

My 1966 Golden Field Guide($3.95) is coming unglued. We've used this reference for 40 years from homes in the Northeast, East, Southwest and Southeast U.S. Our life bird list is impressive due to this guide.It provides multiple ways to help you differentiate among birds in the same family. This reference book has never let us down.