Conditions of Use

Publicly-accessible texts, images and sounds
While this Website is publicly-accessible, not all the material here available are in the public domain -- the majority of the images, texts and data are copyrighted to Martin Pfeiffer, University of Ulm-- and a number of other texts and images are still copyrighted to their original print publishers or digitizers and made available here with permission. This complex set of copyrights requires that users exercise appropriate caution in making use of materials from the site.

I have put great effort and expense into producing this site, and I hope the results are useful to a broad audience. Comments and feedback are most welcome.

By their use of these texts and images, users agree to follow these conditions of use:
These texts and images may not be used for any commercial purpose without permission from Dr. Martin Pfeiffer, University of Ulm, Germany. Please contact me directly with such requests.

Educators and researchers are welcome to print out items and distribute them to students or to otherwise use these materials for research or for formal / informal instruction. I request that full attribution be made to or to Martin Pfeiffer, University of Ulm for all uses of this information and that to the degree it's possible users send me reports on use of my site or materials.

My thanks are due to the many projects and individuals who have contributed to these collections. Credits are provided on the "Impressum/Credits" page of this Website. New works will be added on a continuing basis.

Martin Pfeiffer

I understand and accept the conditions of use and wish to enter