How far back do your newspaper's online archives go? The U.S. Library of Congress has a database of thousands of newspapers dating back to the 1800s. In the case of over 150 of the papers, there are also digitized, searchable pages. And it's all available via its new Chronicling America API (technical details at our Chronicling America API profile).
In Spring 2011, the New York Public Library (NYPL) launched one of the largest culinary data projects of all time: What's on the Menu?. The NYPL maintains one of the world's largest menu collections (around 45,000 menus dating back to the 1840s). The project aims to ease searching through this massive dataset. In simplifying menu search, What's on the Menu launched the first NYPL public API.