To speed response and lessen the frustration of our students, much of the material has been downloaded from other sites to a local server and in some cases modified. For similar reasons, redundancy is sometimes built in with links to the same material on two sites. Non-public domain material is accessed by hyperlinks or downloaded with permission. All downloaded material has been fully acknowledged. Any persons or organizations who are not satisfied with attribution or who feel that material has been downloaded without permission should contact us at their earliest convenience.
Modifications are generally minor.
All downloaded documents were given the grey paper background seen on this page. Originally, images were deleted to speed response. Now that modems and networks are faster, images, but not necessarily the same images, are being added. Typically, links to other documents have been removed or changed to local pages. Obvious typographical errors in the texts have been corrected.