Penny Napoleonic Wars prompted the use of base metals in 1797. Despite the decimalization of currencies in the United States and, later, throughout the British Commonwealth, the name remains in informal use. No penny is currently formally subdivided, although farthings (¼ d.), halfpennies, and half cents have previously been minted and the mill (1/10¢) remains in use as a unit of account in some contexts. "Penny" is first attested in a 1394 Scots text, a variant of Old English ', a development of numerous variations including ', ', and '. The etymology of the term "penny" is uncertain, although cognates are
A Monetary History of the United States late 1940s and eventually published "A Monetary History" through Princeton University Press in 1963. The Depression-related chapter, "The Great Contraction," was republished as a separate book in 1965. The book discusses the role of the monetary policy in the U.S. economy from the Civil War Reconstruction Era to the middle of the 20th century. It presents what was then a contrarian view of the role of monetary policy in the Great Depression. The prevalent view in the early 1960s was that monetary forces played a passive role in the economic contraction of the 1930s. The "Monetary History" argues that the