1To Thomas Jefferson from Henry Dearborn, 9 July 1808 (Jefferson Papers)
Suppose we agree to pay $20,000 towards the expences of the canal say $2,000 per month while the is actually going on, on condition that the Company will Engage to compleat the canal within one year, and that there shall at all times be at least 5 ½ feet of water in all parts of it, so that boats & vessels decend ing five feet of water may pass through and that all vessels or boats that may...