The first attempt to introduce American goods into the more southern markets of Mexico from Santa Fé, was made in the year 1824. The amounts were very small, however, till towards the year 1831. For a few of the first years, the traders were in the habit of conveying small lots to Sonora and California; but this branch of the trade has, I believe, latterly ceased altogether.
Commerce of the Prairies (1831–1839), Chapter 25 Conclusion of the Santa Fe Trade