The border between USA & Mexico with the adjoining regions on both sides on a map at 1:1, 390, 000 from ITMB with altitude colouring presenting the topography. The map is double-sided, with a very small overlap between the sides, & extends north within US to La Vegas & Houston, & in Mexico southwards to cover about half of the Baja California peninsula & along the Gulf of Mexico coast to Tampico. Altitude colouring with spot heights (both in feet) shows the topography, with names of mountain ranges, etc. Road network indicates toll routes & border crossing points are clearly marked. Within Mexico the map also shows locations of petrol stations. Railway lines are included, local airports are marked, as is the time zone boundary. Various places of interest are highlighted, including campgrounds & in Mexico hotels in isolated locations. Latitude & longitude lines are drawn at 2° intervals. Each side had a separate index.