Paul Beecher Blanshard (August 27, 1892 - January 27, 1980) was a famous anti-Catholic bigot. His works have been referred to as those of a "professional" bigot differentiating them from less literary, less sophisticated efforts such as those of Jack Chick. Blanshard's most notorious work is American Freedom and Catholic Power (1949). Other works of anti-Catholic bigotry include The Irish and Catholic Power (1953) and Kennedy presidency-obsessed work The Future of Catholic Power (1961). 
Blanshard was editor for The Nation and special counsel and spokesman for Americans United for Separation of Church and State. He was also a member of the National Council for the League for Industrial Democracy, for the Rochester, New York area.
He graduated from the University of Michigan in 1914.
While at university, he wrote about joining the ministry. Blanshard was a Christian socialist, but found himself more inclined toward the socialism and less toward the Christianity.
"During those college years I arrived at two decisions about myself. I would be a socialist and I would enter the Christian ministry. In retrospect, the first decision seems entirely natural, but the second decision was the worst blunder of my life."
- An Outline of the British Labour Movement, (1923)
- Labor in southern cotton mills, (1927)
- What's the Matter with New York, (1932)
- Technocracy and Socialism, (1933)
- Democracy and Empire in the Caribbean, (1947)
- American Freedom and Catholic Power, (1949)
- Communism, Democracy, and Catholic Power, (1951)
- My Catholic Critics, (1952)
- The Irish and Catholic Power, (1953)
- The Right to Read: The Battle Against Censorship, (1955)
- God and Man in Washington, (1960)
- The Future of Catholic Power, (1961)
- Freedom and Catholic Power in Spain and Portugal, (1962)
- Religion and the Schools: The Great Controversy, (1963)
- Paul Blanshard on Vatican II, (1966)
- Personal and Controversial: an Autobiography, (1973)
- Some of my Best Friends are Christian, (1974)
- Classics of Free Thought, (1977)
- Paul Blanshard, Writer and Critic Of Catholic Church, Is Dead at 87; 'Must Be Reckoned With' A Move to the Vatican, The New York Times
- "New and Old Anti-Catholicism", Harvard University
- JFK’s ‘Religion Speech’. National Review (September 11, 2010).
- (1922) The challenge of waste, 2.
- Paul & Mary Blanshard: Fighters for Social Justice, 1892-1980 & 1902-1965
- General Catalogue of the Theological Seminary, Andover, Mass: 1880
- Blanshard, Paul (1973). Personal and Controversial: An Autobiography. Beacon Press, 20.
- Notable American Unitarians 1936-1961, Paul Blanshard & Mary Hillyer Blanshard: Fighters for Social Justice