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An API for the Prints and Photographs Online Catalog

The PPOC - JSON HTTP API is an API for exploring content in the Library of Congress's Prints and Photographs Online Catalog (PPOC), a website focused on the Library's collection of still pictures, including photographs, fine and popular prints and drawings, posters, and architectural and engineering drawings. Documentation of the PPOC API, which is a work in progress, can be found on the PPOC website ( Most of the content in PPOC is also accessible via the APIs.