author
Known today mainly for a concise, illustrated study of the painter Jean-Baptiste-Camille Corot, this writer contributed to an early 20th-century art-book series designed to make great artists approachable for general readers.

by Sidney Allnutt
Sidney Allnutt is a little-documented author whose surviving public profile rests largely on Corot, a short art monograph now available through Project Gutenberg. The book presents the life and work of Jean-Baptiste-Camille Corot in a clear, accessible way, suggesting a writer interested in bringing art history to a broad audience.
The Project Gutenberg text shows that Corot appeared in the Masterpieces in Colour series, a collection of compact, illustrated books on major painters. Within that series, Allnutt's contribution sits alongside volumes on artists such as Raphael, Rembrandt, and Delacroix, placing the work in the popular tradition of introductory art writing rather than academic scholarship.
Beyond that book, reliable biographical details about Allnutt are hard to confirm from the sources found here, so it is safest to treat him as an obscure early art writer whose reputation now rests on this single widely preserved title.