Three Hundred and Sixty Years of Caselaw: “The Caselaw Access Project (“CAP”) expands public access to U.S. law. Our goal is to make all published U.S. court decisions freely available to the public online, in a consistent format, digitized from the collection of the Harvard Law Library.

• Our data
• Scope limits
• By the numbers
• Digitization
• Data quality
• Data citation
• Usage & access
• Press
• Partners
• Contributors

What data do we have? CAP includes all official, book-published United States case law — every volume designated as an official report of decisions by a court within the United States. Our scope includes all state courts, federal courts, and territorial courts for American Samoa, Dakota Territory, Guam, Native American Courts, Navajo Nation, and the Northern Mariana Islands. Our earliest case is from 1658, and our most recent cases are from 2018. Each volume has been converted into structured, case-level data broken out by majority and dissenting opinion, with human-checked metadata for party names, docket number, citation, and date. We also plan to share (but have not yet published) page images and page-level OCR data for all volumes…”