Primary Sources are original sources: they were created by someone who participated in or observed an event. They include diaries, newspapers, government documents, photographs, and other manuscripts.
Personal texts--diaries, memoirs, letters, autobiographies, and papers--usually make excellent primary sources because they were written by a historical person you're studying.
Personal texts are scattered throughout the internet, in databases, and on the shelves of the UA Libraries. Here are some techniques for locating diaries, letters, and other primary sources using Scout, Google, or Classic Catalog: