Algorithmic colouring book

Colouring book history

https://en.wikipedia.org/wiki/Coloring_book

https://www.vox.com/2015/9/2/9248663/coloring-book-history

http://colorplaner.com/a-brief-history-of-adult-coloring-books/

http://ufdc.ufl.edu/UF00048498/00001/41

https://www.newyorker.com/books/page-turner/a-history-of-the-coloring-book-to-damien-hirst

Pedagogical devices

https://en.wikipedia.org/wiki/Froebel_gifts

https://en.wikipedia.org/wiki/Froebel_gifts#/media/File:Fr%C3%B6bels_second_bullding_box.jpg

https://en.wikipedia.org/wiki/Montessori_sensorial_materials

Colouring book Europeana

http://blog.europeana.eu/tag/colouring-book/

https://twitter.com/search?src=typd&q=%23ColorOurCollections

http://library.nyam.org/colorourcollections/wp-content/uploads/sites/5/2018/02/Europeana_ColorOurCollections_2018.pdf http://blog.europeana.eu/wp-content/uploads/2015/12/EU_ColouringBook_low.pdf

ColorOurCollections is a week-long colouring fest on social media organized by libraries, archives, and other cultural institutions around the world. Using materials from their collections, these institutions are sharing free colouring content with the hashtag ColorOurCollections and inviting their followers to colour and get creative with their collections.

Algorithmic contour tracing

http://sicv.activearchives.org/jorn/index1920.php

http://sicv.activearchives.org/contours-view/test-plur-black-01.html

http://kurenniemi.activearchives.org/logbook/?p=172