Benjamin Ricketson Tucker (April 17, 1854 – June 22, 1939) was a proponent, in the 19th century, of American individualist anarchism, which he called "unterrified Jeffersonianism", and editor and publisher of the individualist anarchist periodical Liberty.

Tucker was born on April 17, 1854 in South Dartmouth, Massachusetts. In 1872, while a student at M.I.T., Tucker attended a convention of the New England Labor Reform League in Boston, chaired by William B. Greene, author of Mutual Banking (1850). At the convention, Tucker purchased Mutual Banking, True Civilization, and a set of Ezra Heywood's pamphlets. Furthermore, Free-love anarchist, Ezra Heywood introduced Tucker to William B. Greene and Josiah Warren, author of True Civilization (1869). He also started a relationship with Victoria Woodhull, which lasted for 3 years.

Tucker made his debut into radical circles 1876, when Heywood published Tucker's first ever English translation of Proudhon's classic work What is Property?. In 1877-1878, Tucker published his original journal, Radical Review, which ran for only four issues. From August 1881 to April 1908, he published the periodical, Liberty, "widely considered to be the finest individualist-anarchist periodical ever issued in the English language".^{[citation needed]} In 1892, he moved the Liberty from Boston to New York.

Murray Newton Rothbard (March 2, 1926 – January 7, 1995) was an American economist, historian, and political theorist. He was a prominent exponent of the Austrian School of economics who helped to define libertarianism by theorising a form of free-market anarchism which he termed "anarcho-capitalism." Rothbard wrote over twenty books and is considered a centrally important figure in the American libertarian movement.

Building on the Austrian School's concept of spontaneous order, support for a free market in money production and condemnation of central planning, Rothbard advocated abolition of coercive government control of society and the economy. He considered the monopoly force of government the greatest danger to liberty and the long-term well-being of the populace, labeling the state as nothing but a "gang of thieves writ large"—the locus of the most immoral, grasping and unscrupulous individuals in any society.

Rothbard concluded that all services provided by monopoly governments could be provided more efficiently by the private sector. He viewed many regulations and laws ostensibly promulgated for the "public interest" as self-interested power grabs by scheming government bureaucrats engaging in dangerously unfettered self-aggrandizement, as they were not subject to market disciplines. Rothbard held that there were inefficiencies involved with government services and asserted that market disciplines would eliminate them, if the services could be provided by competition in the private sector.

Jeff Riggenbach (born January 12, 1947) is an American libertarian journalist, author, editor, broadcaster, and educator.

Riggenbach's first book, In Praise of Decadence (1998), argued that the baby boomers turned out to be far more libertarian in their personal philosophy than had been expected.

His second book, Why American History Is Not What They Say: An Introduction to Revisionism (2009), argued that political events and trends in late 20th Century America had led to a rebirth of popular interest in revisionist accounts of American history. In this study of American revisionists, Riggenbach identifies three distinct phases within American revisionism.