Michael Sadleir (1888–1957) was a British man of letters who operated across several sectors of the twentieth-century literary world. Born Michael Thomas Harvey Sadler, he adopted the surname Sadleir for his literary and professional pursuits. Over the course of his career, Sadleir distinguished himself through his multi-faceted engagement with books, working variously as a publisher, novelist, bibliographer, and book collector.\n\nAs a novelist, Sadleir contributed to the creative literature of his day, while his work as a publisher allowed him to shape the broader literary landscape. His passion for the physical book was reflected in his dual activities as an avid book collector and a dedicated bibliographer, roles in which he studied and preserved the history of publishing and book production. Through these diverse pursuits, Sadleir remained a central figure in British book culture until his death in 1957.
