Instruct: Classify an Amazon review as either positive or negative.
Query: The baseline for Roseville Art Pottery

The Huxfords are wonderful authors that have offered, collectors of Roseville Art Pottery, a basic foundation for identifying various Roseville lines. No one author [I personally author a mid-year price guide]has all the answers, but each of us attempt to add to the ongoing data base. The Huxford volumes are an essential tool for Roseville collectors and Dealers.