Ulysses S. Grant —
Photo Credit: By Brady-Handy - Public Domain, https://commons.wikimedia.org/w/index.php?curid=33527

Andrew Johnson —
Photo Credit: By Mathew Brady - File:Andrew Johnson photo portrait head and shoulders, c1870-1880.jpg, Library of Congress., Public Domain, https://commons.wikimedia.org/w/index.php?curid=7913396

James Buchanan — cropped
Photo Credit: By From Brady daguerreotype (Mathew Brady) (1822-1896) - Library of Congress, Public Domain, https://commons.wikimedia.org/w/index.php?curid=98916

Franklin Pierce —
Photo Credit: By Mathew Brady - Public Domain, https://commons.wikimedia.org/w/index.php?curid=36225803

Millard Fillmore —
Photo Credit: By The Bureau of Engraving and Printing - Restoration by Godot13, Public Domain, https://commons.wikimedia.org/w/index.php?curid=33963784

An 1850 print depicting the death of Zachary Taylor —
Photo Credit: By Cornell University Library - Death of Genl. Z. Taylor, 12th President of the United States, No restrictions, https://commons.wikimedia.org/w/index.php?curid=51437374

Zachary Taylor —
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=71911954

Emerson's grave — Sleepy Hollow Cemetery, Concord
Photo Credit: By Allowishus - my sony DSC-P200 camera, Public Domain, https://commons.wikimedia.org/w/index.php?curid=4971751

Ralph Waldo Emerson — American writer Ralph Waldo Emerson in 1857
Photo Credit: Public Domain, https://commons.wikimedia.org/w/index.php?curid=11868430

Harvard's Hollis Hall in 1934 — Thoreau's dorm, it was built in 1763 by Thomas Dawes, and housed George Washington's troops during the American Revolution
Photo Credit: By Arthur C. Haskell, photographer. - Public Domain, https://commons.wikimedia.org/w/index.php?curid=9599966

Harvard Yard — Freshman dormitories
Photo Credit: By The original uploader was Mancala at English Wikipedia. - Transferred from en.wikipedia to Commons by Vinhtantran. Created by user:Mancala., Public Domain, https://commons.wikimedia.org/w/index.php?curid=5922104