Around ten pages of text, although you may run over if you wish. References, illustrations, and other materials are in addition to the text. You need not have reached your conclusion or written any text, but you must have found some usable sources and established generally what you are going to discuss. Your paper should be based on at least six sources, and preferably more. I understand that library resources are limited here.
Textbooks are sources of last resort.
They may help you understand the background of your subject, and are useful for suggesting primary sources, but please try not to cite any. Also avoid popular magazines like Time except for new research presented as news, since that may be difficult to find published elsewhere. Try to find at least some sources that are under 15 years old. Avoid depending too heavily on sources from before the 60's, although older work is OK if you find more recent sources that treat is as still being current. Be very critical of all material on the internet.