Try searching the person you are interested in as an AUTHOR in the online catalog.
Try adding diary or letter or correspondence to a keyword search about the person you are interested in.
In the days before text messaging, cell phones, and e-mail- people wrote letters, diaries, and kept paper records of their activities. Many of these resources are available and provide valuable (primary source) descriptions of the life and actions of some key players in American history. Here are just a sampling of some available in the Alkek Library