Eustace Clarence Mullins, Jr. (March 9, 1923 – February 2, 2010) was a populist American political writer, biographer, and antisemite. His most famous work was The Secrets of The Federal Reserve. Along with Nesta Webster, he is generally regarded as one of the most influential authors in the genre of conspiracism.

Eustace Clarence Mullins, Jr. was born in Roanoke, Virginia, the third child of Eustace Clarence Mullins (1899–1961) and his wife Jane Katherine Muse (1897–1971). His father was a salesman in a retail clothing store.

Eustace Mullins was educated at Washington and Lee University, New York University, the University of North Dakota and the Institute of Contemporary Arts (Washington, D.C.)

In December 1942, at Charlottesville, Virginia he enlisted in the military as a Warrant Officer. He was also a veteran of the United States Air Force, with thirty-eight months active service during World War II.

Mullins frequently visited poet Ezra Pound during his period of incarceration in St. Elizabeths Hospital for the Mentally Ill in Washington, D.C. between 1946 and 1959. According to Mullins it was Pound who set him on the course of research that led to his writing The Secrets of The Federal Reserve

Nikola Tesla (Serbian Cyrillic: Никола Тесла; 10 July 1856 – 7 January 1943) was a Serbian-American inventor, physicist, mechanical engineer, electrical engineer, and futurist. He was an important contributor to the use of commercial electricity, and is best known for developing the modern alternating current (AC) electrical supply system. His many revolutionary developments in the field of electromagnetism in the late 19th and early 20th centuries were based on the theories of electromagnetic technology discovered by Michael Faraday. Tesla's patents and theoretical work also formed the basis of wireless communication and the radio.

Born in the village of Smiljan (now part of Gospić, present day Croatia), Tesla was a subject of the Austrian Empire by birth and later became an American citizen. Because of his 1894 demonstration of short range wireless communication through radio and as the eventual victor in the "War of Currents", he was widely respected as one of the greatest electrical engineers who worked in America. He pioneered modern electrical engineering and many of his discoveries were of groundbreaking importance. In the United States during this time, Tesla's fame rivaled that of any other inventor or scientist in history or popular culture. Tesla demonstrated wireless energy transfer to power electronic devices in 1891, and aspired to intercontinental wireless transmission of industrial power in his unfinished Wardenclyffe Tower project.

Jim Marrs (born 5 December 1943) is an American former newspaper journalist and New York Times best-selling author of books and articles on a wide range of alleged cover ups and conspiracies. Marrs is a prominent figure in the JFK conspiracy press and his book Crossfire was a source for Oliver Stone's film JFK. He has written books asserting the existence of government conspiracies regarding aliens, 9/11, telepathy, and secret societies. He was once a news reporter in the Dallas–Fort Worth Metroplex and has taught a class on the Kennedy Assassination at University of Texas at Arlington for 30 years. Marrs is a member of the Scholars for 9/11 Truth.

A native of Fort Worth, Texas, Marrs earned a Bachelor of Arts degree in journalism from the University of North Texas in 1966 and attended graduate school at Texas Tech in Lubbock for two years more. He has worked for several Texas newspapers, including the Fort Worth Star-Telegram, where, beginning in 1968, he served as police reporter and general assignments reporter covering stories locally, in Europe, and in the Middle East. After a leave of absence to serve with a Fourth Army intelligence unit during the Vietnam War, he became military and aerospace writer for the newspaper and an investigative reporter.

Ezra Weston Loomis Pound (30 October 1885 – 1 November 1972) was an American expatriate poet, critic and a major figure of the early modernist movement. His contribution to poetry began with his promotion of Imagism, a movement that derived its technique from classical Chinese and Japanese poetry, stressing clarity, precision and economy of language. His best-known works include Ripostes (1912), Hugh Selwyn Mauberley (1920), and his unfinished 120-section epic, The Cantos (1917–1969).

Working in London in the early 20th century as foreign editor of several American literary magazines, Pound helped to discover and shape the work of contemporaries such as T. S. Eliot, James Joyce, Robert Frost, and Ernest Hemingway. He was responsible for the publication in 1915 of Eliot's "The Love Song of J. Alfred Prufrock," and for the serialization from 1918 of Joyce's Ulysses. Hemingway wrote of him in 1925: "He defends [his friends] when they are attacked, he gets them into magazines and out of jail. ... He writes articles about them. He introduces them to wealthy women. He gets publishers to take their books. He sits up all night with them when they claim to be dying ... he advances them hospital expenses and dissuades them from suicide."

Smedley Darlington Butler (July 30, 1881 – June 21, 1940) was a Major General in the U.S. Marine Corps, an outspoken critic of U.S. military adventurism, and at the time of his death the most decorated Marine in U.S. history.

During his 34-year career as a Marine, he participated in military actions in the Philippines, China, in Central America and the Caribbean during the Banana Wars, and France in World War I. By the end of his career, he had received 16 medals, five for heroism. He is one of 19 men to twice receive the Medal of Honor, one of three to be awarded both the Marine Corps Brevet Medal and the Medal of Honor, and the only man to be awarded the Brevet Medal and two Medals of Honor, all for separate actions.

In his 1935 book War is a Racket, he described the workings of the military-industrial complex and, after retiring from service, became a popular speaker at meetings organized by veterans, pacifists and church groups in the 1930s.

In 1934, he became involved in a controversy known as the Business Plot when he told a congressional committee that a group of wealthy industrialists were planning a military coup to overthrow Franklin D. Roosevelt. The purported plot would have had Butler leading a mass of armed veterans in a march on Washington. The individuals identified denied the existence of a plot, and the media ridiculed the allegations. The final report of the committee stated that there was evidence that such a plot existed, but no charges were ever filed. The opinion of most historians is that while planning for a coup was not very advanced, wild schemes were discussed.