Exhibitions of what American painter took place at Amory Hall?
Amory Hall (Boston):  Myriad activities took place in the rental hall, including sermons; lectures by Henry David Thoreau, Ralph Waldo Emerson, William Lloyd Garrison; political meetings; exhibitions by Rembrandt Peale, George Catlin, John Banvard; moving panoramas; magic shows; concerts; and curiosities such as the "Nova Scotia Giant Boy." George Catlin: George Catlin (July 26, 1796 – December 23, 1872) was an American painter, author, and traveler, who specialized in portraits of Native Americans in the Old West.
George Catlin