Henry B. Northup, References Henry B. Northup, American businessman Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: Solomon Northup…who enlisted the help of Henry B. Northup, a lifelong friend of Solomon and the grandnephew of the person who had manumitted Mintus. Read More…who enlisted the help of Henry B. Northup, a lifelong friend of Solomon and the grandnephew of the person who had manumitted Mintus. Read More