A digest of international law as embodied in diplomatic discussions, treaties and other international agreements, international awards, the decisions of municipal courts, and the writings of jurists, and especially in documents, published and unpublished, issued by Presidents and Secretaries of State of the United States, the opinions of the Attorneys-General, and the decisions of courts, federal and state

This seminal multi-volume digest was compiled and edited by John Bassett Moore, an American diplomat and professor of international law, and published under the auspices of the United States Department of State in 1906. The project was conceived as a monumental effort to codify American legal practice and precedent, providing a comprehensive reference for lawyers, diplomats, and scholars to navigate the complex evolution of international relations and domestic legal interpretations through the early 20th century.

The work is noted for its exhaustive inclusion of primary source materials, ranging from official correspondence and treaties to the nuanced opinions of United States Attorneys-General. By synthesizing an immense breadth of documents into a structured narrative, Moore aimed to create an authoritative standard for international law that reflected American policy and jurisprudence. It remains highly regarded in legal history for its scholarly rigor and for documenting the foundational principles that shaped U.S. foreign policy during the nation's emergence as a significant global power.