Another handful of Great Ideas IV covers have been added. Almost at the complete set now.
Also wanted to note that David Pearson (lead designer of the Great Ideas series) has been completely forthcoming about the specific sets of reference points that he’s pulled from for this series. Specifically from Great Ideas IV, the covers for The Gettysburg Address and The Horrors and Absurdities of Religion pull from a poster by Maciej Zbikowski, and a piece of Albrecht Dürer (no image, sorry), respectively.