"The seceding South Carolina delegation" — Harper's Weekly, December 22, 1860
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=16064095

Harpers Ferry Armory in 1862 —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=261749

Flag of Haiti — cropped to square
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=433156

The Sistine Chapel as it may have appeared in the 15th century — (19th-century drawing)
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=11420535

Sixtus IV Pope —
Photo Credit: By Titian - Public Domain, https://commons.wikimedia.org/w/index.php?curid=43432875

Seal for the Tribunal of the Holy Office of the Inquisition in Spain —
Photo Credit: By User:Di (they-them) - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=85189845

The Capitulation of Granada —
Photo Credit: By Francisco Pradilla y Ortiz - Public Domain, https://commons.wikimedia.org/w/index.php?curid=17424140

The Alhambra, Granada —
Photo Credit: CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=538221

Muhammad XII's family in the Alhambra moments after the fall of Granada —
Photo Credit: By Manuel Gómez-Moreno González - [Public Domain, https://commons.wikimedia.org/w/index.php?curid=19411620

Coat of arms of Granada —
Photo Credit: By Own workWernigeroder Wappenbuch, p. 24 v.A Complete Guide to Heraldry, p. 13detail of the Alhambra palace, CC BY 4.0, https://commons.wikimedia.org/w/index.php?curid=116526877

An early picture of Georgia Tech — Description: A picture taken of Georgia Tech's new shop building (left) and Tech Tower (right) circa 1899. The picture appears to be taken from Cherry Street near North Avenue, facing north
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=3269174