Archie Dick, a professor of information science at the University of Pretoria, said 100 books were on a banned list when the National Party came to power in 1948.
That number grew substantially in the 1950s: from 400 in 1950 to 1,400 in 1955.
A decade late, in 1965, a total of 702 publications were banned in that year alone.
Among the authors banned by apartheid censors were Peter Abrahams, James Baldwin, Jane Gool, Nadine Gordimer, Langston Hughes, James Matthews, Nelson Mandela and Richard Rive.
Like bannings, book burnings are an unavoidable part of our cultural history.
Initially it was pornographic material that was destroyed by the state, revealed Dick in a 2012 study, but this later extended to political works.
Books remain a potent symbol for enacting ideas and wounding.
In 2010 a Johannesburg court prevented Muslim activist Mohammed Vawda from burning Bibles in response to a proposed Koran burning in Florida, US.
Last year student protesters damaged 100 books in a fire at the University of the Witwatersrand's Wartenweiler Library.
In Durban students set fire to the University of KwaZulu-Natal's Howard College law library.
Its holdings include a book about the global protests and bannings that met Monty Python's satirical film Life of Brian (1979).
• Documenta 14 runs until September 17. To donate to Minujín's project, e-mail books@documenta.de