Cravath, Swaine & Moore LLP (known as Cravath) is an American law firm based in New York City, with an additional office in London. The firm was founded in 1819. The firm arose from two predecessor firms, led by Richard M. Blatchford in New York City, and William H. Seward in Auburn, New York, respectively. In 1854, these firms merged to form the firm of Blatchford, Seward & Griswold. Named partner Samuel Blatchford had been appointed to the United States Supreme Court in 1882 by President Chester Arthur, and served for 11 years until his death. Named partner Seward later served as both Governor and then Senator from New York. As Secretary of State under Abraham Lincoln, Seward kept Britain and France from intervening during the Civil War by threatening war, supported the 1865 passing of the Thirteenth Amendment, and in 1867, under Andrew Johnson, he negotiated the purchase of Alaska from Russia in a transaction contemporaries derisively called "Sewards Folly." Paul Drennan Cravath, who joined the firm in 1899, developed and instituted the "Cravath System", which combines a distinctive way of approaching the hiring, training and compensation of lawyers. In 1944, after a series of name changes, the name Cravath, Swaine & Moore was established and has not been altered since. Cravath has represented some of America’s great inventors, from Samuel F.B. Morse in the late 1840s, Cyrus McCormick, Elias Howe, and Charles Goodyear in the 1850s, to Thomas Edison in the 1880s. Some current client relationships that began in the 1800s are with CBS, JPMorgan, and PricewaterhouseCoopers. The firm has had a long record of clients in the US railroad industry beginning with the New York & Erie and Union Pacific railroads, and express delivery businesses such as Adams, Southern, and Wells Fargo. Its 19th century history includes the 1808 insanity defense of William Freeman for the murder of John G. Van Nest, the 1848 Jones v. Van Zandt challenge to the constitutionality of slavery, and the Pollock v. Farmers' Loan and Trust Company tax case of 1895. Cases of mention before the Supreme, appellate and Chancery courts in more recent decades have been Kiobel v. Royal Dutch Petroleum Co. and Westfed Holdings Inc. v. United States, and City of Providence v. First Citizens BancShares Inc. et al. Important litigation work with IBM has included two landmark antitrust cases, one of which was a 13-year battle dubbed by Time magazine as “the case of the century."