I'm interested in the types of materials and subjects The Wittliff Collections focuses on. Please identify the general types of artists and their works that make up their holdings, and list the specific named collection categories that are linked on the 'Collections' page.
Navigate to 'https://thewittliffcollections.txst.edu/collections.html'. Identify the general types of artists and their works that constitute The Wittliff Collections' holdings from the introductory text. Identify and list the specific named collection categories that are presented as links or distinct sections on the 'Collections' page. Synthesize this information to answer the task.
The agent successfully navigates to 'https://thewittliffcollections.txst.edu/collections.html'. The agent states that The Wittliff Collections focuses on the legacies of 'writers, photographers, filmmakers, musicians and other artists' who define Southwestern culture. The agent lists the specific named collection categories as: 'Literature Collections', 'Photography Collections', 'Texas Music Collection', and 'Lonesome Dove Collection'.