What worldly belongings does Perry keep with him, and what might these items reveal about him?

From the text:

Now, thanks to a letter, an invitation to a "score," here he was with all his worldly belongings: one cardboard suitcase, a guitar, and two big boxes of books and maps and songs, poems and old letters, weighing a quarter of a ton.

From the description of Perry's belongings, we can infer that he was artistic and well read. He enjoyed music, reading, poetry, and the study of geography.