The Advanced Search option is available on the search results page:
Advanced Search allows you to search within specific fields such as title or name/creator, or limit the search to a specific collection or format type.
Limit search to specific fields: title, name/creator, and notes.
Search full text (when available).
Search all collections or narrowing to a specific collection or multiple collections using check-boxes.
Access to more than 150,000 digital items - including photographs, documents, audio, and video, which reflect a range of materials collected, managed and preserved by the Library.