Finding Aids

C. Robert Werle (1893-1990) was an industrial engineer who worked for Cooley & Marvin Company of Boston conducting time studies, as well as analysis of accounting and plant methods for a variety of clients, mostly in the textile, leather, woodworking and metalworking industries. This collection consists of images, advertisements, and sales flyers, for various clients of Werle, specifically a metal packaging company, a cedar chest manufacturer, duplex homes for sale.

This collection includes ephemera, postcards, films, advertisements, photographs, documents and objects relating to the history of salt. The collection was assembled by Carol Litchfield (1936-2012), a biologist and biochemist with an interest in halophiles and salt history. These items document the history and development of salt manufacturing throughout the world. Historic and modern methods of salt harvesting are depicted from various areas around the world.

Additionally, this collection includes documentation of Carol’s personal research and participation in salt related conferences and programs.

E.I. du Pont de Nemours & Company is a chemical company more commonly referred to as the DuPont company. While cellophane was invented in Switzerland, it was not until DuPont acquired the patent in 1923 that allowed DuPont scientist William Hale Charch (1898-1958) to improve it so that it was impervious to water vapor. DuPont produced cellophane until 1986. This collection consists of undated photographs, one saleman's album, and one poster that all relate to cellophane packaging.