Hello categorists As a small project many months ago i started http://en.wikipedia.org/wiki/Timeline_of_category_theory_and_related_mathema.... Not only because there was none but to write a little piece of what i have learned so others can benefit from it. In fact i often look in it for details. Since i am not a real expert in category theory (which is huge!) yet, could you see if there are errors, inaccuracies, bad explanation or wording etc.? It is so sad when you get wrong facts from wikipedia. Just edit, no e-mails needed. Additions are just as good :) At the time there was no nLab. If there was i would maby have written it there. If you want and there is a need to i could start transfering the timeline to nLab. I think you like more to edit nLab than wikipedia. Best Regards Rafael Borowiecki [For admin and other information see: http://www.mta.ca/~cat-dist/ ]