"What is undoubtedly valuable about the book is the way that it carefully arranges, in a beautifully printed hardback, a selection of concrete poetry's keystones. The first half of Perloff's selection triangulates Brazil, Austria and Scotland through the work of three key figures: Augusto de Campos, Gerhard Rühm, and Ian Hamilton Finlay. For the anglophone reader, she glosses the foreign words involved, prising apart the heavy punning that sparked the concrete imagination."–Jeremy Noel-Tod "Times Literary Supplement"