Pulled paste papers were used as cover papers on German and Italian pamphlets and as endpapers for the heavily blocked or plain leather bindings of the 18th century. A variation of the technique consisted of laying a soft string or thin strips of felt between the two sheets. When these were rubbed down, the material which had been laid over left white areas on the paper in whatever pattern it had been arranged. These papers seem to have been produced most often in a single color, usually dull blue or terra-cotta; however, there are also examples, often found in German and Italian books of the 18th century, in red, yellow, and violet, in which circles of felt were used to produce an effect of small round doughnutlike patterns. (217 )