Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Historical USDA information

For those to whom American agricultural history is important, these yearbooks are priceless. Each is a "slice in time" of a particular facet of agriculture. Choose the slice that's of most interest to you -- as a historian, high school or college student, someone involved in production agriculture, consumer, etc. -- and enjoy the wealth of information, photos, charts, etc., that are part and parcel of these yearbooks.