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Marks like these are generally caused by dirt that accumulates inside books over time. Friction from books being moved on and off the shelves (with associated movements, however slight, between the pages within adjacent books) rubs the dirt into the pages and creates these wear patterns. This book had no odor, and no signs of moisture damage or presence (the pages did not feel cool to the touch). In cases like this, it is important to include investigation of other parts of the book when drawing conclusions about the presence or absence of mold.

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Books Gone Bad - Mold in Library Collections was a project sponsored by Maine College of Art, in partnership with the Joanne Waxman Library. Funding for this project came from the Stephen and Tabitha King Foundation. The Project Lead and Artist for this project was Diane J. Wren. All contents Copyright © 2011 by Diane J. Wren. All rights reserved. No part of this web site may be reproduced or distributed in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, or stored in a data base or retrieval system, without the prior written permission of Diane J. Wren.