J.R. Alcorn 1943. Itinerary Mexico North Am- erica. Saturday, February 27, 1943. We left Monterrey this morning after we made a tour of the town. We then drove southward over highway no. 1 and passed through the towns of Linares, and Mante. We stopped for the night at Cd. Valles. Today we passed through much tropical territory. Palm and other trees and vegetation, in places, were so thick to make it appear difficult for a person to walk through the jungle. Parrots and other birds, not before seen by me, were observed. I did follow a small trail for a short distance into the thickets and tonight have found about a dozen ticks (very small ones) on my cloths and body.