1) Create a new project in NoodleTools where you can track your citations and take notes.
2) Brainstorm some keywords to use when you search; ie. "Thurgood Marshall" or "Greensboro AND Woolworth".
3) Search the databases and websites listed below.
4) Use the print resources available to look for information on your topic. Search print resources by using the index at the back of each book.
If ImageQuest doesn't give you many results, try searching the following in Google (instead of using Google Images):
"Your Topic" AND "Library of Congress" or "Your Topic" AND "American Memory"