https://zkm.de/de/personen/reg-butler
Reg Butler | ZKM
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https://www.reg-butler.com/
Reg Butler Biography - Infos for Sellers and Buyers
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https://www.christies.com/zh-cn/lot/lot-6363035
REG BUTLER (1913-1981), Girl on a Round Base | Christie's
Girl on a Round Base
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https://www.sothebys.com/en/auctions/ecatalogue/2014/modern-post-war-british-art-l14141/lot.20.html
(#20) Reg Butler
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https://www.sothebys.com/en/auctions/ecatalogue/2017/modern-post-war-british-art-l17143/lot.18.html
(#18) Reg Butler
18regbutler