Chronicling America vs Trove

Chronicling America is the Library of Congress's searchable archive of historic U.S. newspaper pages published through 1963, built from the National Digital Newspaper Program. As of August 2025 its data moved fully onto the general loc.gov JSON/YAML API, retiring the old chroniclingamerica.loc.gov endpoints in favor of structured search, batch, and full-text access — no API key is required, though heavy use should self-throttle.

Trove is the National Library of Australia's aggregated search across newspapers, books, images, maps, and other cultural-heritage records spanning well over a century. Its REST API returns XML by default with JSON available via an encoding parameter, and moved from v2 to a mandatory v3 in September 2024 after the older version was discontinued. A free API key is required, issued instantly through a Trove account for non-commercial use.