John, King of England — A drawing of the effigy of King John in Worcester Cathedral cropped HISTORY OF ENGLAND by SAMUEL R. GARDINER
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=10254274

Château de Chinon from the south —
Photo Credit: By Franck Badaire - Fonds documentaire du Conseil Général d'Indre-et-Loire, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=14521344

University of Cambridge logo —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=77177268

A Prognostication Everlasting of Right Good Effect — First English book to propound the Copernican heliocentric theory
Photo Credit: https://galileo.ou.edu/exhibits/prognostication-everlasting-right-good-effect

Leonard Digges' Pantometria — By Leonard Digges (author). Engraver unknown. Printed by Abell Jeffes, London, 1591
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=6237363

Thomas Digges —
Photo Credit: https://prabook.com/web/thomas.digges/3753721#gallery

Capitulations of Santa Fe — The Capitulations by Juan II Coloma, 1st Lord of Elda
Photo Credit: By XpoferenS - Own work, Public Domain, https://commons.wikimedia.org/w/index.php?curid=4491439

Joan of Portugal —
Photo Credit: By António de Holanda - Public Domain, https://commons.wikimedia.org/w/index.php?curid=36396171

Joanna la Beltraneja —
Photo Credit: By António de Holanda - Public Domain, https://commons.wikimedia.org/w/index.php?curid=36395812

John of Gaunt —
Photo Credit: Attributed to Lucas Cornelisz de Kock (1495–1552) - Public Domain, https://commons.wikimedia.org/w/index.php?curid=1354396

Constance of Castile —
Photo Credit: By António de Holanda - Public Domain, https://commons.wikimedia.org/w/index.php?curid=36394168