Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mr. Achenbach writes like an angel

I was impressed by the fact that his portrait of George Washington manages to capture the man under the powdered wig without diminishing his stature at all. Recently I've been dipping into the GW letters because of an interest in his involvement in the Braddock and Forbes campaigns, and I must say that the man in those 1750s letters is the same tenacious and fascinating fellow revealed in Achenbach's book. Anyone interested in rivers, geography, cartography, the history of technology, or the spirit of exploration will want to read this book.