• Linux-Maskottchen: lewing@isc.tamu.edu Larry Ewing and The GIMP–
• „Bootsmann Dorian ordnet das Großsegel“ by SurfGuard is licensed under CC BY-NC-SA 2.0
• Hühner: Image by daniel.stark is licensed under CC BY 2.0
• „Hans-Dietrich Genscher“ by Freie Demokraten is licensed under CC BY-NC-ND 2.0
• Gandhi: Copyright expired 50 years after publication. It was most probably published in USA at the time.
• Käthe Wohlfahrt: https://commons.wikimedia.org/wiki/File:K%C3%A4the_Wohlfahrt.jpg (Website)
• Telefon: „Phone, Telefon, Fernsprechapparat“ by mripp is licensed under CC BY 2.0
• Gruppenzwang: Screenshot des YT-Videos (öffentlich). Wir machen das so zur Vermeidung einer Einbindung von YT-Quellcode auf unserer Seite.
• Stein: „US 2 – Rock in Road“ by WSDOT is licensed under CC BY-NC-ND 2.0
• „‚THAT WAS EASY!'“ by joepopp is licensed under CC BY-NC-ND 2.0
• Trompete by freeimages.com
• Screenshots von der Bevölkerungspyramide des Bundesamtes für Statistik