The best resource is in our own backyard! This website really should be the only one you need if the databases aren't enough.
Go to the Education & Resources Drop down on the top menu.
Issues & Controversies in Hisotry
Type in topic in search bar, filter by era and find WWI topics.
Username: shawnee1
Password: resource
Under General References Use:
Username: smsd1. Password: learn
Click on Advanced
Search your topic, or WWI