a) Card Land reform: Derivative work (graphical remix and adaption; © Richard Shako) of this photo: "Bauer beim Pflügen mit 2 Pferden" Bundesarchiv, Bild 183-T0802-505 / CC-BY-SA. Licensed under CC BY-SA 3.0 via Wikimedia Commons. (Die Grafik steht ebenfalls unter CC BY-SA 3.0; Namensnennung:© Richard Shako, histogame, Karte Nr. 1 des Brettspiels WIR SIND DAS VOLK!)
b) Card Brandt kneels in Warsaw: Derivative work (graphical remix and adaption; © Richard Shako) of a photo by Szczebrzeszynski (Own work (self-made photograph)); Public domain, via Wikimedia Commons.
c) Card 1973 Oil Crisis: Free drawing, © Richard Shako.
d) Card Hungary dismantles border fence: Derivative work (graphical remix and adaption; © Richard Shako) of a photo. Original: Foto AP, ullstein bild, at memorial tablet, Bornholmer Straße/Böse Brücke, 10439 Berlin; under Panoramafreiheit.