Whitfield Diffie —
Photo Credit: By Duncan.Hull - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=64958488

Logo of the International Association for Cryptologic Research —
Photo Credit: By Source (WP:NFCC#4), Fair use, https://en.wikipedia.org/w/index.php?curid=43741977

David Lee Chaum —
Photo Credit: By Attribution, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=3919522

Attila in Gaul - 451 —
Photo Credit: By Own work - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1323025

The Empire of the Huns at the time of Attila —
Photo Credit: By Slovenski Volk - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=17966815

Huns — Taken from emblem on Figure of Attila in a museum in Hungary - Image scaled and cropped by alasnome
Photo Credit: By A.Berger - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=7362503

Figure of Attila — in a museum in Hungary
Photo Credit: By A.Berger - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=7362503

Battle of Andernach — Miniature of the battle of Andernach between Charles the Bald and Louis, his nephew. Image taken from f. 231v of Chroniques de France ou de St Denis.
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=69915743

Bruno, Duke of Saxony —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=8297219

Otto I, Duke of Saxony —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=8297169

Gandersheim Abbey church —
Photo Credit: By Misburg3014 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=7843431