Copyright of Paula Co., USA, manufactured in Japan. Rare, retro report paper. A set of 4 books in different colors: orange, purple, green, and blue. It seems to be from the "again" series. Although it is new and unused, please understand that there may be some age-related deterioration as it is from the 1970s. There are scratches and warping on the cover and corners, as well as blackening on the back of the backing paper. Please consider only if you understand that it is an old item and has been stored for a long time. Returns and refunds are not accepted.