Université Toulouse 1 Capitole —
Photo Credit: By Damsof31 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=5392098

logo for University of Toulouse —
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=25904872

Pope Urban V — In the Basilica of Saint Paul Outside the Walls, Rome
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=42732147

Pope Innocent VI — In the Basilica of Saint Paul Outside the Walls, Rome
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=42732131

Huckleberry Finn — As depicted by E. W. Kemble in the original 1884 edition of the book
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=1854602

Tom Sawyer fishing — Frontispiece from The Adventures of Tom Sawyer by Mark Twain (1st ed., 1876)
Photo Credit: By True Williams - Public Domain, https://commons.wikimedia.org/w/index.php?curid=1334632

Thomas Alva Edison —
Photo Credit: By Louis Bachrach - Public Domain, https://commons.wikimedia.org/w/index.php?curid=6582301

Twain in the laboratory of Nikola Tesla, early 1894 — Originally published as part of an article by T.C. Martin called "Tesla's Oscillator and Other Inventions" that appeared in the Century Magazine (April 1895),
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=7231469

Birthplace of Mark Twain in Florida, MO —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=2872819

Twain House in Hartford, CT —
Photo Credit: By Cliff - Flickr: Mark Twain House and Museum, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=16488910

Olivia Langdon — At about 24 years-old
Photo Credit: By unattributed - Public Domain, https://commons.wikimedia.org/w/index.php?curid=11359930