Rare and expertly executed map representing the United States (or at least the Eastern half) as an eagle, prepared by Joseph Churchman for his Rudiments of National Knowledge (1833). In the book Churchman expands on the idea of the country as an eagle, including an apology to the people of the state of Maine (who are not included in the bounds of the eagle's body), though he insists that the state rather forms the eagle's "liberty cap".