Held at: Science History Institute Archives [Contact Us]315 Chestnut Street, Philadelphia, PA 19106
This is a finding aid. It is a description of archival material held at the Science History Institute Archives. Unless otherwise noted, the materials described below are physically available in their reading room, and not digitally available through the web.
Overview and metadata sections
Tiers & Company was an American firm owned by brothers Cornelius and Alexander H. Tiers. Tiers & Company was involved in a variety of business ventures, one of which involved Herman Frasch's revolutionary process for extracting sulfur.
Herman Frasch (1851-1914) was a German-American chemical engineer. Frasch was born in 1851 and was educated in Germany. He came to the United States in 1868 and established a chemical laboratory in Philadelphia, Pennsylvania. In 1887, Frasch patented a method of removing foul-smelling sulfur compounds from "sour" oil. In 1894, Frasch adapted the technology of the oil industry to sulfur mining and devised a means whereby the sulfur could be pumped out of the ground rather than mined. The process made American sulfur competitive with the more easily mined sulfur of Sicily. By securing an economical and reliable source for sulfuric acid, Herman Frasch helped the infant U. S. chemical industry to break free from European domination. Frasch was awarded a Perkins Medal in 1912 for his innovations. He died in Paris, France in 1914.
Tiers-Frasch Collection, Science History Institute Archives, Philadelphia, Pennsylvania.
The Tiers-Frasch Collection is a fragmentary collection of business records from the firm of Tiers & Company. A portion of these records relate to the firm's dealings with Herman Frasch and his partner Franklin Rockefeller concerning the use of their process for extracting sulfur. The collection is arranged into the following two series:
- Correspondence and Letter Books
- Technical and Legal Documents
The Tiers-Frasch Collection was purchased by the Science History Institute (formerly known as the Chemical Heritage Foundation) from B & L Rootenberg Rare Books and Manuscripts in 2000.
The Tiers-Frasch Collection was processed by Andrew Mangravite in January 2003. This finding aid was revised by Birch Mezzaroba in May 2022.
- Science History Institute Archives
- Finding Aid Author
- Finding aid created by Andrew Mangravite and encoded into EAD by Birch Mezzaroba.
- Finding Aid Date
- Access Restrictions
There are no restrictions on the materials and the collection is open to the public.
- Use Restrictions
The Science History Institute holds copyright to the Tiers-Frasch Collection. The researcher assumes full responsibility for all copyright, property, and libel laws as they apply.
Arranged in its original order, this series consists of letter books of correspondence from the firm of Tiers & Company. Letter books for the years 1892-1895 and 1900-1903 are missing. The contents of the correspondence concerns Tiers & Company's partnership with Herman Frasch and his associates, their sulfur-mining enterprise, and family business.
Arranged chronologically, this series consists of legal documents from the firm of Tiers & Company. Because of the age of the materials, preservation photocopies have been made of the materials in this series. The contents of these files contain deeds, correspondence, and bank statements regarding the holdings of Cornelius Tiers.