Codex Germaniæ diplomaticus: Worinnen viele vortreffliche, und zum Theile noch niemals zum Vorschein gekommene, auch zur Illustration der Teutschen Reichs-Historie und Juris Publici, höchstnöthige Documenta enthalten sind

Published in Frankfurt in 1732, the Codex Germaniæ diplomaticus represents a significant undertaking by the German jurist and diplomat Johann Christian Lünig. The work was conceived as a comprehensive repository of primary source documents intended to support the study of German imperial history and public law. Lünig, known for his extensive efforts to organize and publish legal records of the Holy Roman Empire, compiled these texts to provide scholars and officials with direct access to foundational treaties, decrees, and institutional records that had previously been inaccessible or dispersed across various archives.

The design of the collection follows the conventions of early 18th-century scholarly printing, prioritizing legibility and the accurate transcription of dense historical records. By aggregating these documents, Lünig aimed to create an authoritative reference for 'Juris Publici'—the public law of the Empire—which was essential for understanding the political fragmentation and legal complexity of the era. Upon its release, the volume was received as a vital, if dense, tool for legal historians and civil servants, reflecting the contemporary academic pursuit of systematizing national archives to better legitimize the evolving political order.