William E. Jones's book of photographs, Killed: Rejected Images of the Farm Security Administration (PPP Editions, 2010) here, and more here. An interview with Jones here. "Jones transforms the violent negations of Roy Stryker's hole-punched photographs, which had been deemed unfit for the 1935-1944 Farm Security Administration Project, into an elegant abstraction by compiling the circular hole-punched forms into a grid. Each circle is surrounded by a small portion of that photograph's original imagery, thereby memorializing what Stryker had originally 'killed,'" at Printed Matter, here.