Mitla: a Narrative of Incidents and Personal Adventures on a Journey in Mexico, Guatemala, and Salvador in the Years 1853 to 1855. With Observations on the Modes of Life in those Countries.

Elibron Classics. Replica of 1858 edition by Longman, Brown, Green, Longmans, & Roberts, London.
This is an illustrated edition. It comes with a downloadable oversize maps.
The book describes several Central American countries as seen by the author in the middle of the 19th century.