There are many access points to the vast collections of primary sources available to you.
Certain words and phrases will find primary sources in library catalogs. You can use these in OskiCat or Melvyl:
-early works to 1800
-caricatures and cartoons
-songs and music
For specific search strategies, see the Library's guide to Finding Historical Primary Sources.
Your searches will be more successful if, in your preliminary research, you identify specific: