Wikipedia is one of my frequently used resources. It is great for that quick update when I need to understand a new concept. It was used in the creation of this series of trading cards. That’s where I got the Dewey class lists from. I couldn’t go past a quote from Jimmy Wales, the co-founder and promoter of Wikipedia.

My original concept was to provide a free encyclopedia for every single person in the world. — Jimmy Wales

Original image by perpertualplum used under a creative commons licence.