In this episode of Rare Book Chat, hosts Michael DiRuggiero and Jeremy O'Connor discuss a rare ratification copy of the US Constitution with Seth Kaller, the pre-eminent dealer of rare and important American historical documents. The conversation explores the document's historical significance,  the complexities of its journey from creation to ratification, the role of compromise in the Constitution's formation, the importance of Charles Thompson's signature, and the implications of the auction for collectors and historians alike.