Search the alphanumeric string in the Online Archive of California (OAC) or the Library of Congress if the prefix matches a known historical body.
If you are trying to find the source or historical context of this specific file: ama003002010504023.jpg
Each segment often represents a hierarchical level: 003 : Collection ID 002 : Series/Sub-series 010504 : Folder or Box number 023 : Specific item or page number in the folder. How to Use This Information Search the alphanumeric string in the Online Archive