Politician, Social Reformer, Author. He was educated in the public schools of New Jersey and New York City. First employed (1864-1865) with Hackettstown (N.J.) Gazette as a compositor, worked for the Brooklyn Union (1866), studied law in New York law firm of Thomas, Glassey & Blake, and was admitted to the New York bar in 1870. In 1871 he went to South Carolina where he served as a stenographic law clerk for David T Corbin, state senator, and took stenographic notes of the Klu Klux trials at Columbia. In 1872 he began the practice of law in New York, establishing the law partnership of Lockwood & Post. Served as assistant U.S. attorney for the southern district of New York, 1874-1875, and during 1879-1883 was editorial writer for New York "Truth." He became interested in Henry George and his teachings on single tax theories in 1881. He ran for Congress on the Labor and Greenback tickets in 1882, and became an advocate for single tax and allied economic reforms, lecturing on these subjects in the United States and Canada. In 1886 he edited the New York "Leader," a George campaign paper, and was successively contributor, editorial writer, news editor, and editor of the New York "Standard" during 1886-92. He was associate editor and editor of the Cleveland "Recorder" 1895-98. In 1898, with his wife, (Alice Thacher Post) as associate editor, he began established and edited the Chicago "Public," a political and economic review espousing the principals of radical democracy and the single tax theory of public revenues and land tenure. Between 1906-1909 he was appointed to the Chicago, IL. school board. In June 1913 he was appointed by President Wilson to be Assistant Secretary of Labor (1913-1920) of the Department of Labor, which had just been formed with William B Wilson secretary of the department. In the closing year of the Wilson Administration, the Department's Solicitor General, John W Abercrombie, took an unexpected leave of absence from his post. Because of Abercrombie's absence, his responsibilities for immigration issues were suddenly thrust upon Post. In two short months he made many well-reasoned immigration related decisions that favored individual rights over more restrictive immigration policies established under the Anarchist Exclusion Act of 1918. So fierce was the backlash from opponents in Congress and the some members of the Administration (Attorney General A. Mitchell Palmer and J. Edgar Hoover among others) regarding these "controversial" decisions that Post was accused of having abused his power. Calls for his impeachment and removal from office were heard. Post requested and was granted a chance to testify. He successfully defended his actions and no further action was taken by the House Rules Committee. As early as January 1920 the Federal Bureau of Investigation (FBI) had begun collecting information about Post but failed to substantiate any affiliation with Anarchist groups. He published in 1923 "The Deportations Delirium of Nineteen-Twenty: A Personal Narrative of an Historic Official Experience", an account of governmental actions between 1912-1920 against individuals suspected of being radicals. Post was a prolific writer. He wrote numerous magazine and newspaper articles. He published a number of books including: Outlines of Louis F. Post's Lectures on the Single Tax, Absolute Free Trade, the Labor Question, Progress and Poverty, the Land Question, the Elements of Political Economy, Socialism, Hard Times," (1894); Ethics of Democracy" (1903), third edition 1916; "The Prophet of San Francisco" (1904); The Traction Issue in the Municipal Election in Chicago" (1905); "Our Despotic Postal Censorship" (1906); "Ethical Principles of Marriage and Divorce" (1906); "The Basic Facts of Economics; a common-sense primer for advanced students" (1927); and "What Is the Single Tax" (1926); and "The Prophet of San Francisco; Personal Memories & Interpretations of Henry George" posthumous (1930). Several of these books are still in print today (2013).