For too long now we have had many statements about the origins of visual mapping but there are too few examples, to my way of thinking.
I’ve just written about early visual thinking maps and included a couple of cases.
If any can add to the list by providing other early examples, I’d love to have the chance to display them (with acknowledgement and link back) in this newly-begun collection. Please email me: vic [at] mind-mapping [dot] org. Idea Sunbursting is a particular case I’d like to carry an example of.
[Update, 27th Aug: linked fixed, thanks to Matthew of Banxia.]