I need books articles, and primary sources about Dorothea Dix.
For books, go to our catalog, WorldCat, linked below and search her name. We do have books and eBooks on her.
For articles, go to the Databases by Subject LibGuide linked below and select the History tab. You can select EBSCO: All History Databases, and then search for her. Be sure to limit to full text, references available and scholarly article to make sure you get academic sources.
For primary sources, you can try (on the same History tab page) Encyclopedia Britannica and EBSCO: MasterFILE Premier. You might want to also try doing an internet search. You should be able to find speeches, pictures, newspaper articles from that time, etc.
If you check the references and links on her Wikipedia page (don't use the actual Wikipedia article!), there are some primary sources. Items from universities, museums, archives, and libraries are worthwhile, as well.