Did you check Wikipedia today? Have you added your own documentation? Maybe a hyperlink? Today it is based on extremely powerful systems and databases. But what was before? How and who began to document? We were interested in the pioneers who made all this possible in the first place. They did intensive research, putting their lives at the service of something they believed in, mostly against the resistance of their contemporaries. Fame, honor or wealth? That’s no good. Today we take our hat off to a pioneer, an almost forgotten hero of the documentation. Marvel with us how the documentation of knowledge, long before the first computer, was applied in practice!