Depending on the story you want to tell, these might be particularly interesting!
You can use Google tricks to search websites. Add site:.org to your search and it will limit to that domain to organization websites. In addition, you can search specific websites this way—for example, site:.org "freedom schools" AND SNCC.
You can also limit by date by opening the Tools link and choosing a time period, although for this topic that may not be useful.
