Milk is from Caballero's Book Sculptures, an eight-part series that questions how society values poetry. This series proposes the book as a sculptural object and will see Caballero print eight different books, each as an edition of one, with a unique ISBN and the anatomy and structure of a traditional book. The books in this series contain only one poem, printed 197 times in their pages. When taken as integers, the digits in 197 add up eventually to 8, a number that represents abundance. Working with a bespoke book binder to design every element, the works in this series are stunning objects yet remain very authentically books, with a table of contents, an author page and a dedication, which is hand-signed and dedicated to its collector. This inscription is accompanied by a physical book and a video that shows a single page of the book endlessly turning while Caballero reads the text, accentuating the artist's expansion of the ways poetry can be experienced, exhibited and transacted in the digital age. Caballero's Book Sculptures celebrate the materiality of poetry and the renewed cultural agency afforded to verse via blockchain provenance.