The images on this website are licensed under a free license agreement, released into the public domain, originate from organizations that allowed their use for this specific purpose or are made by the editorial staff. The contents of this website originate from books, catalogues, magazines, brochures, archives, public announcements, journals or other works and are quoted and described as such. Otherwise, the contents are written by the editorial staff. The utmost care has been paid to this procedure and please inform us about any omission, incomplete or wrong description or quotation or any other irregularity. The publication is freely accessible, including the right to copy or distribute the contents for other purposes.