was speaking of mutualité in his writings and used the term mutuellisme at least as early as 1848 in his "Programme Révolutionnaire". In 1850, William Batchelder Greene used the term "mutualism" to describe a mutual credit system similar to that of Proudhon. Also in 1850, the American newspaper The Spirit of the Age, edited by William Henry Channing, published proposals for a "mutualist township" by Joshua King Ingalls and Albert Brisbane, together with works by Proudhon, Greene, Pierre Leroux and others. For American anarchist historian Eunice Minette Schuster, "[i]t is apparent...that Proudhonian Anarchism was to be found in the United States at least as early as 1848 and that it was not conscious of its affinity to the Individualist Anarchism of Josiah Warren and Stephen Pearl Andrews...William B. Greene presented this Proudhonian Mutualism in its purest and most systematic form". Later, Benjamin Tucker fused Max Stirner's egoism with the economics of Warren and Proudhon in his eclectic influential publication Liberty. Mutualism has been associated with two types of currency reform. Labor notes were first discussed in Owenite circles and received their first practical test in 1827 in the Time Store of former New Harmony member and individualist anarchist Josiah Warren. Mutual banking aimed at the monetization of all forms of wealth and the extension of free credit. It is most closely associated with William Batchelder Greene, but Greene drew from the work of Proudhon, Edward Kellogg and William Beck as well as from the land bank tradition. Mutualists argue that association is only necessary where there is an organic combination of forces. For instance, an operation that requires specialization and many different workers performing their individual tasks to complete a unified product, i.e. a factory. In this situation, workers are inherently dependent on each other; and without association, they are related as subordinate and superior, master and wage-slave. An operation that can be performed by an individual without the help of specialized workers does not require association. Proudhon argued that peasants do not require societal form, and only feigned association for the purposes of solidarity in abolishing rents, buying clubs, etc. Mutualists argue that free banking should be taken back by the people to establish systems of free credit. They contend that banks have a monopoly on credit, just as capitalists have a monopoly on land. Kevin Carson is a contemporary mutualist and author of Studies in Mutualist Political Economy.