Samuel Adams —
Photo Credit: By John Singleton Copley - Public Domain, https://commons.wikimedia.org/w/index.php?curid=175521

John Hancock —
Photo Credit: By John Singleton Copley - Massachusetts Historical Society, Public Domain, https://commons.wikimedia.org/w/index.php?curid=11558431

The Midnight Ride of Paul Revere — 20th-century depiction of Revere's ride
Photo Credit: By Office of War Information - Public Domain, https://commons.wikimedia.org/w/index.php?curid=3519673

The Bloody Massacre Perpetrated in King Street Boston on March 5th, 1770 — Engraved Printed & Sold by Paul Revere Boston. The print was copied by Revere from a design by Henry Pelham for an engraving eventually published under the title "The Fruits of Arbitrary Power, or the Bloody Massacre,"
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=4415919

Paul Revere — By John Singleton Copley, 1768 cropped
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=74589213

Raphael — cropped from self-portrait
Photo Credit: By Raphael - Public Domain, https://commons.wikimedia.org/w/index.php?curid=35440864

Portrait of Pope Julius II — By Raphael, 1511 - National Gallery, London
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=100865

Pope Julius II —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=100865

Frederick III and Eleanor of Portugal —
Photo Credit: By Unknown - http://www.tirolerportraits.it/de/Portraits-suchen.aspx, Public Domain, https://commons.wikimedia.org/w/index.php?curid=18818333

Maximilian I, 1519 —
Photo Credit: By Albrecht Dürer - Public Domain, https://commons.wikimedia.org/w/index.php?curid=22189346

Maximilian I — Portrait By Albrecht Dürer, 1519
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=22189346