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Stuart Bertolotti-Bailey (previously Stuart Bailey; born 1973) is a British graphic designer, writer and editor. In 2000 he co-founded the bi-annual arts journal Dot Dot Dot with Peter Bil'ak. In 2006 he began working with American graphic designer, writer and editor David Reinfurt under the pseudonym Dexter Sinister,^[1] which is also the name of their 'just-in-time workshop and occasional bookstore' on New York's Lower East Side. Reinfurt replaced Bil'ak as co-editor of Dot Dot Dot the same year; it continued under Bailey and Reinfurt's direction until the final, 20th issue in 2010 before being replaced by Bulletins of the Serving Library, co-edited by Bailey and Reinfurt together with American artist and writer Angie Keefer until 2017.^[2] The journal has since morphed into a non-profit organization that variously serves as a publishing platform, a seminar room, a collection of framed objects, and an event space.^[3] The Serving Library Annual is co-edited by Stuart Bertolotti-Bailey, Italian curator and editor Francesca Bertolotti-Bailey, David Reinfurt, and Italian writer and translator Vincenzo Latronico, and published by Roma Publications], Amsterdam.^[4] Since 2017 he has held the position of Head of Design at the Institute of Contemporary Arts in London,^[5] where he lives.

Bertolotti-Bailey studied Typography & Graphic Communication at the University of Reading, and was one of the first participants to study at the Werkplaats Typografie, a postgraduate program co-founded by Dutch graphic designers Wigger Bierma and Karel Martens in Arnhem, The Netherlands.^[6] In 2015 he received a PhD from the Fine Art Department of the University of Reading with a thesis titled Work in Progress: Form as a Way of Thinking.^[7]

• Interview with Stuart Bailey, by Jon Sueda, Speak Up (2006)
• From further (1967) to nowhere (1977) and beyond (2007), a video interview with Stuart Bailey, directed by Michael Aphesbero (2007)
• Dexter Sinister, by Adam Kleinman, BOMB (2008)