In an 1831 case in the U.S. Supreme Court, "Jackson ex dem. Bradstreet v. Huntington", the phrase "black letter" was used: "It is seldom that a case in our time savours so much of the black letter; but the course of decisions in New York renders it unavoidable...". The phrase "black-letter law" was used in the Pennsylvania Supreme Court case "Naglee v. Ingersoll," 7 Pa. 185 (1847). The phrase does not come from association with Black's Law Dictionary, which was first published in 1891. Instead, it presumably refers to the practice of setting law books and citing legal precedents in blackletter type, a tradition that survived long after the switch to Roman and italic text for other printed works.