Book blocksBook blocks
Card catalogs folded into blocks and contained in plexiglas (TM) box.
University of Iowa. Libraries. Special Collections Dept.
Educational use only, no other permissions given. Copyright to this resource is held by the University of Iowa Libraries' Special Collections Department, and is provided here for educational purposes only. It may not be reproduced or distributed in any format without written permission of the Special Collections Department.
Drawings (Visual works)