Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Railroads: The Great American Adventure - Hardcover

I was very impressed with transaction. Book was exactly as described. Very nice packaging. Quick shipping. Great price. Thank you very much. You will make one autistic boy very very happy. He has been wanting this book for some time now. He will be so excited to open it on his birthday. It very well may even be his favorite gift! Thanks again.