Amazon Rainforest — Map of the Amazon rainforest ecoregions as delineated by the WWF in dark green and the Amazon drainage basin in light green.
Photo Credit: wikipedia

Emblem of Nepal —
Photo Credit: By Biplab Anand - Own work and this image was obtained from a Vector version., CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=91193868

McKenna in 1999 — Terence McKenna during a panel discussion at the 1999 AllChemical Arts Conference, held at Kona, HI
Photo Credit: By Jon Hanna - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=25535731

Vagus Nerve — Path of the Vagus Nerve. The image shows the path of the vagus nerve (and a section of the facial nerve). by B Bordoni, PhD
Photo Credit: Neuroanatomy, Cranial Nerve 10 (Vagus Nerve) - www.ncbi.nlm.nih.gov/books/NBK537171/figure/article-30952.image.f5

Claustrum — Coronal section of human cerebrum. The claustrum is indicated by the arrow.
Photo Credit: By Gray - File:Gray718.png, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8100079

Skull Hill — A view of Jeremiah's Grotto and Skull Hill from the south c. 1900
Photo Credit: By The Garden Tomb - Own work, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=34666713

Cranial Nerves —
Photo Credit:

Self-Portrait, 1640’s —
Photo Credit: By Miyamoto Musashi - 島田美術館所蔵, Public Domain, https://commons.wikimedia.org/w/index.php?curid=15377036

Supposed birthplace of Miyamoto Musashi —
Photo Credit: By Drivephotographer - Own work, CC0, https://commons.wikimedia.org/w/index.php?curid=112614857

Arima Kihei —
Photo Credit: http://www.miyamotomusashi.eu/duels/arima-kihei.html

National seal of the Tokugawa shogunate — The seal used to sign the 1858 Treaty of Amity and Commerce between the Tokugawa Shogunate (Japan) and the USA
Photo Credit: The government of the Tokugawa Shogunate. - Public Domain, https://commons.wikimedia.org/w/index.php?curid=130638638