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ARC has a 2,000 search hit limit. To see if there are additional hits, try clicking Refine Search, adding filters or more keywords, and clicking Go.
ARC has thousands of digital copies (or digital images) in the catalog. To search only for descriptions linked to digital images, click Refine Search, check the box next to Descriptions of Archival Materials linked to digital copies and click Go.
The maps are linked to related descriptions in the Archival Research Catalog.