Created by French artist Philippe Thomas, the communication agency called readymades belong to everyone®, for its American version inaugurated in 1987 in New York, and les ready-made appartiennent à tout le monde®, for its French version, is a company behind which the artist disappeared. MAMCO owns the whole agency, which closed in 1995. This book is the first comprehensive study of this work which challenged the traditional role and function of the artist. With readymades belong to eveyone®, the collector or the institution themselves sign the works and become the authors of the works. The book proposes also the last (and unpublished) interview by Philippe Thomas which enables us to understand the deep coherence of his entire work.