Abstract: Andrew Campbell (1821-1890) was an important inventor and manufacturer of printing presses and president of the Campbell Printing Press Company of Brooklyn, New York. His papers include biographical data, correspondence, accounts, patents and records concerning Campbell's inventions.

Abstract: The Walter Scott & Company was a major manufacturer of printing presses, particularly the large high-speed presses and folding machines used by newspapers. The records include correspondence of the company founder, Walter Scott (1844-1907) both in Chicago and Plainfield. Business papers include some material relating to patents, and statements, reports, contracts, payroll summary sheets, price lists and legal papers dating from the period of his widow Isabella Scott's (1851-1931) management. It is a fragmentary collection covering various aspects of the history of the firm and not a comprehensive record.