Red "New York Jul 7" cds with red "MAIL ROUTE" marking. Manuscript "18 1/2" and "per Aretia" on 1828 folded letter to Boston.

The Mall Route fiction only applied to ships sailing from New Orleans to Boston, Philadelphia or Providence, not to vessels sailing from these ports to New Orleans.

Carried on a non-contract ship Aretia, the mail was taken off the vessel at the Belize, and turned Into the post office, at the entrance to the Mississippi River. This cover was carried from New Orleans to Boston. It was charged 18 1/2cents as a Mail Route cover for the Mississippi River part of the trip and for the Boston Harbor portion (total 150-400 milles).