Together Cæsar and Cotton left an immense trove of English state papers on all matters of subjects. While Cæsar spent much of his lifetime as an officer of state, e.g., Master of the Rolls, they both devised innumerable works of great value. For instance, both he and Cotton expounded upon the issue of the post-nati and other arguments made in the conferences on the union with Scotland in Parliament. With their cessation in 1607, Cæsar undertook his most significant follow-up work: “That neither any General Statute nor Nativity only make a Man (whose Parents were Strangers) to be a Natural Subject in any Country.” Later duplicated by Cotton in Titus, F. IV., the intricacies of its two pages remained long-guarded in the private possession of such great men as Lords, Secretaries of State, and Prime Ministers. Only two centuries after Cæsar commenced its work did it come full circle to the British Museum—itself, ironically, formed from the seized library of Cotton. As for legal precedent, it is unique in that its broad historical scope predated the complexities of England's permanent royal colonies in America. During this period, every regnant—except for Charles I and James II—would assent unto major naturalization or alien statutes during their reign, all of which remained common law throughout England, the Empire, and America until, at the least, 1863.