Special thanks to Cynthia Rogers of the History of Science Collection and Jeremy Hammond of the Systems Department for their patience and assistance with this project. Thanks to Shannon Stipe and Daryl Limpus as diligent proofreaders. Thanks also to Bruce Bradley of the History of Science Collection for his encouragement with this project.

All items used in this exhibit are from the collections of the Linda Hall Library or executed for the purpose of this exhibit unless otherwise credited. The World Map found on the Title page, the rendition of a portion of the Bayeux Tapestry above and on the Index and Introduction pages, and the photograph of the Horse and Driver in Kansas City were produced by Nancy Green for this exhibit.

All material in this exhibit is subject to copyright by the Linda Hall Library unless otherwise indicated. It may be copied or electronically transmitted for the noncommercial purpose of scientific or educational advancement granted by Sections 107 and 108 of the Copyright Revision Act of 1976. All copies and electronic transmissions should cite the source and give credit to the Linda Hall Library.