When did image cataloguing standards change?
A historical look at how museum image cataloguing shifted from local systems to shared metadata standards.
How have cataloguing rules for museum images shifted from local systems to shared metadata standards?
For most of the twentieth century, museum image cataloguing was a local craft. Each slide library, photo archive, or curatorial department devised its own rules for describing images, often shaped by the needs of a single collection and the preferences of a single keeper. Over the past fifty years, that localism has gradually given way to shared metadata standards, driven by the rise of digital networks, the need for interoperability, and the emergence of community vocabularies. The shift was not a single event but a series of adaptations, from card catalogues to MARC records to linked open data.
What was cataloguing like before shared standards?
Before shared standards, cataloguing was highly local. A slide library might use a handwritten card with fields for artist, title, date, and location, while a photo archive might use a typed index with different abbreviations. The Getty Research Institute Photo Archive, with two million photographs, relied on local finding aids and card indexes for much of its history, and its strengths in photographic reproduction of western art were documented through in-house systems. Similarly, the National Archives Still Picture Branch, holding over 14 million analog photographs, developed its own record group and series descriptions, such as Record Group 165 for World War I photographs. These local systems worked within their walls but made cross-collection searching difficult.
When did computerised cataloguing begin to change practice?
Computerised cataloguing emerged in the 1960s and 1970s, initially in libraries. The MARC format, developed at the Library of Congress, allowed bibliographic records to be shared, and museums began experimenting with similar approaches for objects and images. For images, early systems often adapted bibliographic models, treating a photograph like a book. This was a first step toward shared metadata, but it still required local decisions about which fields to use and how to populate them.
What role did the Getty and other institutions play in standardising vocabularies?
In the 1980s and 1990s, the Getty took a leading role in developing controlled vocabularies. The Art and Architecture Thesaurus (AAT), the Union List of Artist Names (ULAN), the Getty Thesaurus of Geographic Names (TGN), and the Cultural Objects Name Authority (CONA) provided shared terms for materials, creators, places, and object names. These vocabularies allowed cataloguers to describe images consistently across collections. The Getty Photo Archive, for example, could use AAT terms for photographic processes and ULAN for artist names, making its records more interoperable. The Getty Vocabularies are now available as linked open data, further embedding them in global metadata ecosystems.
How did digital access and interoperability accelerate the shift?
The growth of the web in the 1990s and 2000s made interoperability a practical necessity. Users expected to search across collections, not just within one. The National Archives online catalog, for instance, allows users to search descriptions and digitized copies of images from multiple record groups, as noted on its still pictures page. To support such access, metadata had to be structured, consistent, and machine-readable. Standards like Dublin Core, VRA Core, and later linked data models provided frameworks. This environment pushed museums to adopt shared rules, even if implementation remained uneven.
What does a comparison of local and shared cataloguing reveal?
The following table contrasts key aspects of local and shared cataloguing, based on the historical shift described above. It is a decision aid for institutions considering their own metadata practices.
| Aspect | Local cataloguing | Shared metadata standards |
|---|---|---|
| Vocabulary | In-house terms, abbreviations | Controlled vocabularies (AAT, ULAN, TGN) |
| Record structure | Idiosyncratic cards or indexes | Standardised schemas (MARC, VRA Core, Dublin Core) |
| Interoperability | Limited to one collection | Enables cross-collection search |
| Maintenance | Manual, local | Community governance, updates |
| Access | On-site, physical | Online, digital |
| Examples | Getty Photo Archive card indexes; NARA record group descriptions | Getty Vocabularies as linked open data; NARA online catalog |
When should an institution adopt shared standards?
An institution should consider adopting shared standards when it plans to publish its images online, collaborate with other collections, or contribute to aggregators. The decision depends on resources, existing systems, and user needs. For smaller collections, a phased approach may work: start with a core set of fields, use available vocabularies, and align with widely used schemas. For larger institutions, full integration with linked open data may be appropriate. Because standards evolve, it is wise to consult current official guidance from bodies such as the Library of Congress or the Getty, and to seek advice from metadata specialists. Related questions such as how museum slide libraries began and how microfiche and digital access differ can help frame the practical stakes.
What are the limits and ongoing challenges?
Despite progress, challenges remain. Not all collections have the resources to retrofit legacy records, and local knowledge embedded in old systems can be lost if not migrated carefully. The Getty Photo Archive, for example, continues to provide a guide to its database and finding aids, reflecting the layered history of its cataloguing. The National Archives still maintains record group and series descriptions that reflect its own archival history. Shared standards also require ongoing maintenance and community agreement, which can be slow. Moreover, metadata alone does not guarantee discoverability; it must be paired with good search interfaces and user support.
Conclusion: a gradual, continuing evolution
The shift from local systems to shared metadata standards in museum image cataloguing has been gradual and uneven, but its direction is clear. Driven by digital access and the work of institutions like the Getty and the Library of Congress, cataloguing has become more interoperable and more open. Yet local practices persist, and the balance between local specificity and shared standards is still negotiated. For curators, archivists, and image researchers, understanding this history helps explain the metadata records we use today and the decisions that shaped them. As linked open data and new vocabularies continue to develop, the evolution is far from over.
