Iwerks is a very important figure at Disney. It kind of sucks that his most famous accomplishments are credited to Walt Disney but at least now you all will know.

https://www.waltdisney.org/blog/ub-iwerks-master-animation-and-technology

https://d23.com/walt-disney-legend/ub-iwerks/

https://www.lambiek.net/artists/i/iwerks_ub.htm

https://www.imdb.com/name/nm0412650/

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