Not sure where to start?
Wikimedia Commons is a rich source for historical maps you can use for your research. Since the maps are in the public domain, they are free for everyone to access.
How should I credit or cite the image in my work? If you are including a map in your paper or project, visit Locating and Using Images for Presentations and Coursework from Purdue University or check in with a Skyline College Librarian for some quick advice. (See Library Chat box to the left).