The Real Cause of the U.S. Civil War
Address of the American Institute Founders, March 11, 1828
Page 266 of the Annual Report, sheet 3 of 8
By their propaganda campaign, they hoped to correct "erroneous notions and prejudices," by which they had in mind the notions of free trade.
The New-York Historical Society
http://dlib.nyu.edu/findingaids/html/nyhs/americaninst2.html