Louis Pasteur —
Photo Credit: By Paul Nadar - Public Domain, https://commons.wikimedia.org/w/index.php?curid=28039885

Pasteur Institute classroom — Men and woman working in classroom at the Institut Pasteur, ca. 1920
Photo Credit: By Lévy et Neurdein réunis - Public Domain, https://commons.wikimedia.org/w/index.php?curid=79974757

logo for Pasteur Institute — modified to avatar
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=43126020

Matthieu Ricard —
Photo Credit: By Jon Schmidt, photographe, collaborateur de Matthieu Ricard (sujet de la photo) au sein de l'association Karuna-Shechen, résidant en Suisse., CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=58958315

logo for Clemson University —
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=33320487

Harrison's birthplace — Berkeley Plantation in Charles City County, Virginia
Photo Credit: By Jet Lowe - Public Domain, https://commons.wikimedia.org/w/index.php?curid=407115

Trump Impeached — Members of House of Representatives vote on two articles of impeachment (H.Res. 755), December 18, 2019
Photo Credit: By United States House of Representatives - House Floorcast – Clerk of the U.S. House of Representatives, Public Domain, https://commons.wikimedia.org/w/index.php?curid=85037886

Arms of the University of Pennsylvania —
Photo Credit: By Unknown author - Public Domain, https://commons.wikimedia.org/w/index.php?curid=17365302

CCNY 1876 —
Photo Credit: By Internet Archive Book Images - No restrictions, https://commons.wikimedia.org/w/index.php?curid=42699910

logo for City College of New York —
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=54306352

Robert Hofstadter —
Photo Credit: By Nobel foundation - Public Domain, https://commons.wikimedia.org/w/index.php?curid=6149593