The main tools for identifying processed archival collections beyond NYU include WorldCat, ArchiveGrid, and NUCMC, which are described below. Researchers are encouraged to search all three, even though there will likely be some overlap in search results, to ensure that they have not overlooked relevant collections.
N.B. All repositories have collections that have not yet been arranged and described. Unprocessed collections will not turn up in searches of these databases and may not appear in a library's own catalog. Contact repositories directly to inquire about the availability of unprocessed archival collections.
Information about international archival repositories and their holdings is available from the following sources: