How do people make paper out of trees, and why not use something else? – Cooper H., age 6, St. Louis, Missouri Paper is an important part of modern life. People use it in school, at work, to make ...
Copper pigments promote the deterioration of paper objects; hence, it has been problematic to paper conservation since many valuable historical manuscripts contain copper green pigments. In particular ...
This is a patent model of a rag washing machine for papermaking created by Frank A. Cloudman of Cumberland Mills, Maine and patented on December 4, 1877, under U.S. patent No. 197,764. Cloudman’s ...
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