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Thanks so all these amazing creators who have kindly allowed their works to be used
Original File Name: 1024px-Human_eye,_anterior_view
Source: https://commons.wikimedia.org/wiki/File:Human_eye,_anterior_view.jpg
Licence: Rapidreflex, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons
Original File Name: Blacksmith_at_work02.jpg
Source:https://commons.wikimedia.org/wiki/File:Blacksmith_at_work02.jpg
Licence: User:Fir0002, GFDL 1.2 <http://www.gnu.org/licenses/old-licenses/fdl-1.2.html>, via Wikimedia Commons
Original File Name: Love_padlocks_on_the_Butchers%27_Bridge_(Ljubljana).jpg
Source:https://commons.wikimedia.org/wiki/File:Love_padlocks_on_the_Butchers%27_Bridge_(Ljubljana).jpg
Licence: Petar Milošević, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons
Original File Name: World_War_II_Memorial,_Bicentennial_Mall.jpg
Source:https://commons.wikimedia.org/wiki/File:World_War_II_Memorial,_Bicentennial_Mall.jpg
Licence: rjones0856, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons
Original File Name: Children_working_together_at_school_(4843331570).jpg
Source:https://commons.wikimedia.org/wiki/File:Children_working_together_at_school_(4843331570).jpg
Licence: USAID Indonesia, Public domain, via Wikimedia Commons
Original File Name: Chain_Link_-_geograph.org.uk_-_2993409.jpg
Source:https://commons.wikimedia.org/wiki/File:Chain_Link_-_geograph.org.uk_-_2993409.jpg
Licence: Chain Link by Gordon Griffiths, CC BY-SA 2.0 <https://creativecommons.org/licenses/by-sa/2.0>, via Wikimedia Commons
Original File Name: The_end_of_the_rainbow_-_geograph.org.uk_-_5582274.jpg
Source:https://commons.wikimedia.org/wiki/File:The_end_of_the_rainbow_-_geograph.org.uk_-_5582274.jpg
Licence: The end of the rainbow by Richard Croft, CC BY-SA 2.0 <https://creativecommons.org/licenses/by-sa/2.0>, via Wikimedia Commons
Original File Name: Blacksmith_Lebanon_(Petteri_Sulonen_-_Flickr)_cca2.0.jpg
Source:https://commons.wikimedia.org/wiki/File:Blacksmith_Lebanon_(Petteri_Sulonen_-_Flickr)_cca2.0.jpg
Licence:https://www.flickr.com/photos/primejunta/ on flickr // cropped by Xixtas on en wikibooks, CC BY 2.0 <https://creativecommons.org/licenses/by/2.0>, via Wikimedia Commons
Original File Name: Scientific_analysis_through_the_eyes_of_a_child.jpg
Source:https://commons.wikimedia.org/wiki/File:Scientific_analysis_through_the_eyes_of_a_child.jpg
Licence: Солдатенкова Елена Николаевна, CC BY 4.0 <https://creativecommons.org/licenses/by/4.0>, via Wikimedia Commons
Original File Name: The_road_past_Woodhouses_Bastle._-_geograph.org.uk_-_1558807.jpg
Source:https://commons.wikimedia.org/wiki/File:The_road_past_Woodhouses_Bastle._-_geograph.org.uk_-_1558807.jpg
Licence: David Clark / The road past Woodhouses Bastle.
Original File Name: The_joy_of_the_happy_face_by_Rasheedhrasheed.jpg
Source:https://commons.wikimedia.org/wiki/File:The_joy_of_the_happy_face_by_Rasheedhrasheed.jpg
Licence: Rasheedhrasheed, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons
Original File Name: Clabecq_JPG01.jpg
Source:https://commons.wikimedia.org/wiki/File:Clabecq_JPG01.jpg
Licence: Jean-Pol GRANDMONT, CC BY-SA 3.0 <https://creativecommons.org/licenses/by-sa/3.0>, via Wikimedia Commons