Letter : Washington, to Thomas Aspinwall, 1823 Aug. 20.

Wright, W. Lloyd (William Lloyd), 1876-1950

http://n2t.net/ark:/99166/w61835kq (person)

Roberdeau, Isaac, 1763-1829

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Civil and military engineer; born in Philadelphia, Pa., and educated in England; assistant to Pierre L'Enfant in the early phase of the construction of the city of Washington, D.C.; in charge of several canal and construction projects in Pennsylvania and New Jersey; army officer in the War of 1812; chief, U.S. Bureau of Topographical Engineers (1818-1829); son of Daniel Roberdeau (1727-1795) and Mary Bostwick Roberdeau (d. 1777). From the description of Mathematics and treatise on ca...

Aspinwall, Thomas, 1786-1876

http://n2t.net/ark:/99166/w63n2jfh (person)

Army officer. From the description of Thomas Aspinwall papers, 1847-1853. (Unknown). WorldCat record id: 79455771 A Thomas Aspinwall, 1786-1876, was an American consul. Hugh Legare ́ was Secretary of State for a short time before his death in 1843. From the description of Letter : London, England to Hugh S. Legare ́, 1843 July 3. (Haverford College Library). WorldCat record id: 708359991 Thomas Aspinwall was born in Brookline, Massachusetts, May 23, 1786...

Perkins, Jacob, 1766-1849

http://n2t.net/ark:/99166/w6kh206q (person)

Jacob Perkins (1766-1849) of Newburyport, Mass., was an engraver, inventor, and silversmith, having produced the first steel plate for bank notes and the dies for minting state coins during the Confederation period. He was a prolific inventor in the fields of steam power and the outfitting of ships. Perkins established a factory in England in 1819 for making plates and printing bank notes, and also produced millions of British postage stamps. His steel plate, a preventive against counterfeiting,...