Lammot du Pont, Jr. (1909-1964) assembled a large collection of books, manuscripts, prints, drawings and photographs relating to the history of aeronautics from the first balloon flights through the 1940s. The online collection primarily consists of photographs that depict subjects such as airplanes, balloons and dirigibles, seaplanes, male and female pilots, long-distance and round-the-world flights, airplane crashes, air races, flying instruction, and the Arctic schooner Effie M. Morrissey. Nearly all of the photographs are news service images, many accompanied by original caption information. The collection has not been digitized in its entirety. Image: New World's Record for Helicopter.
Born in 1831, Lammot du Pont was one of the most eminent chemists in the history of E.I. du Pont de Nemours & Company. An engineer by training, he introduced sodium nitrate to the manufacture of powder for blasting and mining purposes and made important improvements in machinery and manufacturing techniques. By 1865, he led all the company’s manufacturing units outside of Delaware, and in 1880 he organized the Repauno Chemical Company for the manufacture of high explosives in New Jersey. He was killed in an explosion while conducting experiments with nitroglycerin in 1884. This online collection is a small selection of items from the Lammot du Pont papers and comprises gunpowder labels, correspondence related to gunpowder explosions, and other business papers. Image: Lammot du Pont engraving by Samuel Sartain.
This letterbook contains tissue copies of the outgoing correspondence dating from 1899 to 1903 of inventor and manufacturer E. E. Hendrick (1832-1909). Although nominally dealing with his actions as president of the Hendrick Manufacturing Company, most of the letters concern personal business, such as purchases of household goods and cigars. Most importantly, they reveal Hendicks' interest in early automobiles, with correspondence with dealers and suppliers. Hendrick tried both electric and steam automobiles, and many of the letters are in the nature of complaints over such things as inadequate horsepower, poor riding quality, or the wrong size of tires. The letterbook has not been digitized in its entirety. The online collection comprises only the correspondence relating to automobiles. Image: E. E. Hendrick to American Electric Vehicle Company, 1900-08-01.
The Longwood Manuscripts comprise the manuscript collections of P. S. du Pont (1870-1954). They made up the core collection of the former Longwood Library, and later the collection became known as The Longwood Manuscripts after the library merged with the Hagley Museum in 1961. The collection is an invaluable resource, tracing the history of the du Pont family from eighteenth-century France to 1954. This online collection is a small selection of materials from the Longwood Manuscripts. Many of the items digitized to date relate to the early history of the E.I. du Pont de Nemours & Company and include correspondence, other business papers, and drawings of powder mills and machinery by Eleuthère Irénée du Pont. Additional items relate to other early du Pont business ventures in the United States, including Du Pont, Bauduy & Company; Du Planty, McCall & Company; and Brandywine Mill Seat Company. Image: E. I. du Pont drawing of sieves used for graining gunpowder, detail.
The brothers Louis Edward Levy (1846-1919) and Max Levy (1857-1926) founded a photoengraving business in Baltimore in 1875. In 1877 they moved to Philadelphia and reorganized the firm as the Levytype Company. Here, they introduced their invention of a new photochemical engraving process, which they called "Levy-type". Other inventions followed, including the engraved glass grating known as the "Levy line screen," which became universally used for producing half-tone photoengravings; the acid blast, or etching machine; and the etch-powdering machine. In 1900, the firm was renamed the Graphic Arts Company, and the brothers added a printing and publishing department to their business. This album contains personal cyanotype photographs. Included are views of a house in Philadelphia; the Pennsylvania Academy of Natural Science; scenes in Boston, Roxbury, Dedham, Concord, Northboro, and Nantucket, Massachusetts, including exterior photographs of the Alcott House and the Hawthorn house in Concord, and the Jonathan Fairbanks House in Dedham; a biology class at M.I.T.; snapshots of children and other people; an unidentified photographer and his camera; and various interiors.
Lukens Steel Company was a medium-sized producer of specialty steel products and one of the top three producers of steel plate in the United States. Lukens Steel Company is noted for being the first industrial company in the United States led by a woman, Rebecca Lukens (1794-1854). The online collection includes woodcuts showing the early history of the mill, interior and exterior views of factory buildings, various depictions of machinery, employees both at work and leisure, floods in 1955 and 1973, and twentieth-century aerial views of the Coatesville plant. Other items depict the owning families, company anniversary celebrations, and philanthropic activities supported by Charles Lukens Huston. The collection has not been digitized in its entirety. Image: Multiple flame cutting.