A hook echo is a radar signature for the part of a supercell tornado wherein the clouds come together with maximum force. Its name derives from the hook-shaped formation with which it shows up on a weather radar. In 1974 a supercell tornado hit the city of Xenia, Ohio (US), demolishing around 1400 buildings. This publication, printed on newspaper, juxtaposes two sequences of found collections: a set of 48 photographs that capture the aftermath of the Ohio tornado, and 22 pages from an album of compiled crochet samples. In this new context, the images relate to each other as a series of structures that become physical matter, accumulations of material. One original print from 1974 is enclosed in each publication, sealed in a plastic sleeve.