Showing Collections: 1 - 4 of 4
Karl Wolfgang Böer papers
Collection
Identifier: MSS 0483
Abstract
Physicist, inventor, university professor, and solar energy pioneer Karl Wolfgang Böer was born March 23, 1926, in Berlin, Germany. He became a naturalized American citizen in August 1972.
The Karl Wolfgang Böer papers, 1945-2003, document the life work and professional career of this German-American physicist, inventor, university professor, and solar energy pioneer. Böer’s work in solid state technology, understanding the photoconductivity and structure of cadmium sulfide, and...
Dates:
1945-2003; Majority of material found within 1961-1986
Philadelphia Custom House records
Collection
Identifier: MSS 0781
Abstract
The Philadelphia Custom House records consist of materials generated by and related to the United States Customs Service of the Port of Philadelphia from 1779 to 1932. These records illustrate commercial and shipping interests, as well as foreign trade relations, in the United States from the late eighteenth to the early twentieth century. The materials also highlight the growth of the U.S. Customs Service as it took on new responsibilities and wielded greater authority over the course of...
Dates:
1779-1934; Majority of material found within 1790-1900
Graff family papers
Collection
Identifier: MSS 0395
Abstract
The Graff family papers primarily depict the business lives of three generations of merchants and tradesmen in eighteenth- and nineteenth-century Philadelphia. The majority of the receipts, letters, and contracts with dates spanning 1750-1856 represent the business affairs of Jacob Graff, his son Jacob, and his grandsons Frederick and Charles Graff.
Dates:
1750–1856; Majority of material found within 1756–1829
Shipley--Bringhurst--Hargraves family papers
Collection
Identifier: MSS 0684
Abstract
Shipley, Bringhurst, and Hargraves are the family names associated with Rockwood, a Victorian Rural Gothic Revival mansion and estate that was built in North Wilmington, Delaware, between 1851 and 1854. The Hargraves were the last family to privately own Rockwood before its donation to New Castle County in the mid-1970s as a historic house museum and public park. The Shipley-Bringhurst-Hargraves family papers document the personal and professional lives of several generations of Delawareans...
Dates:
1660-1987; Majority of material found within 1735 - 1975