ArchivesSpace at the University of Iowa

The construction of this book is such that each page contains a pop-up version of a black hole with black and white background and typography. At the top of each page is the continuing phrase "The searach for the invisible requires sustained obsession." -- Source of annotation: Marvin or Ruth Sackner.

This book with an unusual construction has the following directions printed on its wrappers, "Opens 4 ways by quarter-year - Turn book so 1995 faces up - Find your month by number - open that side to your month. -- Source of annotation: Marvin or Ruth Sackner.