Be sure to look at the list of references at the end of each relevant resource you find. You may find other very relevant sources that you can access for your own project. Check out this brief tutorial for more info:
Using References to Lead to Further Research Material (3 min./ YouTube)
Looking for more scholarly information but want to stick with the simple Google interface?
Search Google Scholar from within the library's website and you will be able to see which articles are availalbe in the library if they are not available online for free.