103 men photo: public domain; 100 men edit: CC0
100 men file caption in the first photo: TheMDC4, probably CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)?
gorilla photo: Sander van der Wel, Bokito (cropped).jpg (https://commons.wikimedia.org/wiki/File:Bokito_(cropped).jpg), CC BY-SA 2.0 (https://creativecommons.org/licenses/by-sa/2.0/)
Wikipedia article captions: English Wikipedia contributors, 100 men versus a gorilla (https://en.wikipedia.org/wiki/100_men_versus_a_gorilla), CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/)