Querier

OldVis gathers catalog entries from existing digital libraries. Two Python packages do that querying. They fetch metadata and images from a source.

• libquery covers large libraries that expose a documented API: David Rumsey Map Collection, Gallica, Internet Archive, and Library of Congress. API docs: oldvis.github.io/libquery.
• libquery_extensions covers additional sources used in this collection: Alabama Maps, British Library, and Telefact. API docs: oldvis.github.io/libquery_extensions.

Raw query results are heterogeneous. Processor packages turn them into the uniform records that go into the dataset.