Lack of reliable sources in English (there is still a documentary in English in the article) is no reason to delete an article about a person who created first Native American and Friends Association in Europe, wrote over 10 books about life of Native Americans, translated into English, Japanese, Russian and other languages, the person who opened a museum and actually existed. How scary to think that most people just disappear completely from the pages of history just because people want to delete them, because they were NOT BOTHERED to find documents about them81.100.242.0