Jean Piaget — Bust in the Parc des Bastions, Geneva
Photo Credit: CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=717019

B.F. Skinner — at the Harvard Psychology Department, circa 1950
Photo Credit: By Silly rabbit - self-made (by User:Silly rabbit). Updated in the Gimp by User:Michaelrayw2., CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=3487621

Hamilton College as painted from a hot-air balloon by watercolor artist Richard Rummell in the early 1900s —
Photo Credit: By Richard Rummell - Collection of Arader Galleries, Public Domain, https://commons.wikimedia.org/w/index.php?curid=15794914

logo for Hamilton College (New York) —
Photo Credit: By Source, Fair use, https://en.wikipedia.org/w/index.php?curid=54864511

One of Pavlov's dogs — with a surgically implanted cannula to measure salivation, preserved in the Pavlov Museum in Ryazan, Russia
Photo Credit: By Rklawton - English Wikipedia, see below, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=601191

Ivan Pavlov —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=19270394

S. M. Kirov Military Medical Academy campus on the bank of the Neva River —
Photo Credit: By Alex 'Florstein' Fedorov, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=20427999

seal of S.M. Kirov Military Medical Academy —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=14225488

USA in 1789 — Map of the states and territories of the United States as it was on August 7, 1789, when the Northwest Territory was organized
Photo Credit: By Made by User:Golbez. - Own work, CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=2560801

Northwest Territory (1787) —
Photo Credit: CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=1255728

flag of California Republic —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=324334