*[[AngelList Database|AngelList]]
*[[Google Crawler]]
*[[Yi Ma]]'s work assembling US Incubators, state-by-state in E:\projects\Kauffman Incubator Project\01 Classify entrepreneurship ecosystem organizations\YiMaResearch\US Incubators
The [[Google Crawler]] was added instead of a structured source, with the exceptions of [[Crunchbase Database|Crunchbase]] and AngelList, the structured sources are all small.