While I take reasonable steps to ensure that the information on its websites is correct, it provides no warranty or guarantee that information is accurate,

complete or up-to-date. I does not accept any responsibility or liability for any actions taken as a result of, or in reliance on, information on my websites.

Site users should check any information by themselves  to confirm the accuracy before taking any action in reliance on it. In addition, I reserve the right

to change information on its websites at any time and without notice in its absolute discretion. I do not warrant or guarantee that my websites will be un-

interrupted or free from errors or viruses and accepts no liability for any loss or damage suffered by any user. External links are provided as a convenience

to site visitors only. I do not endorse or accept responsibility for any externally linked site or its content. If you believe any information on my websites is

inaccurate, out of date or misleading, please bring it to my attention by sending an email to dengel59@web.de.



All historical papers and other graphics are from my collection. Reproduction and distribution of this material is permitted in certain circumstances. The

copyright in other material found on this websites may be owned by other people, and you should get permission from them before distributing their

material. If you believe copyrighted work is available on this websites work in such a way that constitutes copyright infringement, or a breach of an agreed

licence or contract, please notify me by sending an email to dengel59@web.de.


Hamburg, June 2013