Abstract: The binding for a book of samples, such as carpets or floor coverings, comprises a succession of adjacent binding elements (1 to 5) with an elongated shape and each equipped with sample-retaining means. The spine (11) of each retention element is provided on the one hand with an elongated tongue (12) with a flange (13), situated in the extension of the plane of the spine of the upper side of the element, and on the other hand with a longitudinal groove having an inclined narrow zone (14) adapted to interact with a portion of an elongated tongue.