Editing Ub Iwerks (section)

=== Return to Disney (1940–1964) ===
After his return to the Disney studio, Iwerks mainly worked on developing [[special effects|special visual effects]]. He is credited as developing the processes for combining live-action and animation used in ''[[Song of the South]]'' (1946), as well as the [[Xerography|xerographic]] process adapted for cel animation, which was used in ''[[One Hundred and One Dalmatians|101 Dalmatians]]'' (1961).<ref name=korkis/> He also worked at WED Enterprises, now [[Walt Disney Imagineering]], helping to develop many Disney theme park attractions during the 1960s. Iwerks did special effects work outside the studio as well, including the birds for his [[Academy Awards|Academy Award]] nominated achievement for [[Alfred Hitchcock]]'s ''[[The Birds (film)|The Birds]]'' (1963).<ref name="Cinefantastique-Counts-Birds">{{Cite news |last1=Counts |first1=Kyle B. |last2=Rubin |first2=Steve |date=Fall 1980 |title=The Making of Alfred Hitchcock's The Birds |volume=10 |work=[[Cinefantastique]] |issue=2 |url=https://the.hitchcock.zone/wiki/Cinemafantastique_(1980)_-_The_Making_of_Alfred_Hitchcock's_The_Birds |url-status=live |access-date=March 7, 2022 |archive-url=https://web.archive.org/web/20220307154006/https://the.hitchcock.zone/wiki/Cinemafantastique_%281980%29_-_The_Making_of_Alfred_Hitchcock%27s_The_Birds |archive-date=March 7, 2022}}</ref> Iwerks' last credit for Disney was for perfecting the travel matte system for the ''Mary Poppins'' sequence "Feed the Birds"<ref name=korkis/> Iwerks' most famous work,<ref name=korkis/> outside animating Mickey Mouse, was Flip the Frog from his own studio.<ref>{{Cite web |last=Marks |first=Scott |date=May 19, 2016 |title=Fiddlesticks Flips Flip in First Color Cartoon |url=https://www.sandiegoreader.com/news/2016/may/19/screen-fiddlesticks-flips-flip-first-color-cartoon/ |url-status=live |archive-url=https://web.archive.org/web/20220502182312/https://www.sandiegoreader.com/news/2016/may/19/screen-fiddlesticks-flips-flip-first-color-cartoon/ |archive-date=May 2, 2022 |access-date=May 2, 2022 |website=San Diego Reader}}</ref> While he was at Disney, he developed a variety of patents for applying [[Xerography]] for  [[Xerography#Uses in animation|use in animation]].<ref>{{Cite web |title=USPTO Search Results for Iwerks and Xerographic. |url=https://ppubs.uspto.gov/pubwebapp/static/pages/ppubsbasic.html}}</ref>