A letter to the Right Honourable Baron Ashburton, Her Majesty's special minister plenipotentiary to the United States : on the importance of the corn and flour trade with England, via the river St. Lawrence, and on the advantages to be derived from introducing maize into Great Britain, as a cheap article of food for the poor and labouring classes / - Bartlett, John S. ([s.n.],, 1842)