Codex Germaniæ diplomaticus, worinnen viele vortreffliche, und zum Theil noch niemahls zum Vorschein gekommene, auch zur Illustration der Teutschen Reichs-Historie und Juris Publici, höchstnöthige Documenta enthalten sind, welche die Röm: Käyserl : Mayestät, auch Chur-Fürsten und Stände des Heil : Römischen Reichs, sowohl insgemein, als insonderheit, concerniren

The Codex Germaniæ diplomaticus was compiled by the prolific German jurist and archivist Johann Christian Lünig and published in the early 18th century. Lünig was a significant figure in the field of legal historiography, known for his monumental efforts to organize and publish the scattered diplomatic records of the Holy Roman Empire. His work was born out of a contemporary Enlightenment-era desire to systematize the complex legal and political frameworks governing the fragmented German states, providing scholars and officials with a structured reference for public law and imperial history.

The design of the collection follows the conventions of 18th-century scholarly printing, prioritizing density of information and ease of reference for legal practitioners. Lünig curated a vast array of previously unpublished documents, including charters, treaties, and imperial decrees, aiming to fill the gaps in the existing historical record. By presenting these documents in a formal, orderly fashion, Lünig’s work was received by his peers as an essential, if exhaustive, resource for understanding the intricate constitutional mechanisms of the Empire, effectively laying foundational groundwork for later studies in Germanic legal history.