This blog has no economic interests. If someone feels that he or she is injured with regard to the image material used, please contact me immediately. The corresponding image material will then be removed immediately or marked with the necessary information (if it is sufficient to complete it). I concentrate on using public domains and wikimedia common pictorial material for documentation or to contact authors for obtaining a publication right or at least to determine the source as far as possible. If I have not been able to do this in one way or another, I ask for your indulgence – send me your message (via



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Ralf Goffin
An der Wolfskaul, 42
41812 Erkelenz





If you have any questions, please contact me via the e-mail address provided.