Watercolor Paper Blocks are manufactured in the USA by Global Art Materials. The paper in these blocks is crafted in a European mill which produced its first paper stock in 1618. Fluid Easy-Block Watercolor paper blocks differ from other brands of blocks because they are glued on 2 edges, making them easier to separate. When your painting is dry, slide a dull knife or letter opener in the open side under the top sheet. Release the glue along one edge and pull your painting free. Fluid Easy-Block Watercolor Paper Blocks offer the biggest assortment of shapes and sizes of any watercolor paper block.