Big Ideas Simply Explained is a 75-book series with 75 released primary works first released in 1998 with contributions by D.K. Publishing, R.G. Grant, Will Buckingham, Peter Singer, Peter J. King, Douglas Burnham, Clive Hill, John Marenbon, Marcus Weeks, Nigel C. Benson, Joanna Ginsburg, Voula Grand, Merrin Lazyan, Catherine Collin, Antón Corriente, Niall Kishtainy, Paul Kelly, Shulamit Ambalu, Paul Kelly, Sam Atkinson, John Farndon, Danny Leigh, Louis Baxter, Kieran Grant, Damon Wise, Paul Ruditis, Paul J. Ruditis, James Canton, Shanna Hogan, DK, and Various.