In addition to the other resources listed on this page, there are a couple of helpful series available in the stacks.
You can use some of the same subject headings you used to locate secondary sources to locate primary ones, such as:
Speeches, addresses, etc., American.
United States -- History -- Sources.
United States -- Social conditions -- Sources.
Simply, add "primary source" to your search using the Note field.
If you need a refresher on how to do this, click here.