Notes on the Upper Rio Grande, by Bryant P. Tilden, Jr. Explored in the months of October and November, 1846, on board the U. S. Steamer Major Brown, commanded by Capt. Mark Sterling, of Pittsburgh.

8vo., (8 4/8 x 5 4/8 inches). (Title-page lightly soiled and letterpress underscored). 9 folding maps (some short tears and repairs at mounts). Modern green cloth, gilt. First edition. Recording conditions along the Rio Grande at the start of the Mexican War. Tilden's mission was to see if steamboat communications could be opened up at the Presidio de Rio Grande. At that time it was the crossing point for river traffic between Monclova and San Antonio. Tilden journeyed upriver nearly 300 miles, and includes maps in addition to the text which detail the towns, countryside and encounters with Mexicans along the route. This expedition was ordered by General Patterson, the commander of the second division, army of occupation and left on October 1, 1846. Tilden and his party could not go further than Laredo by water; the last portion of the journey was made on horseback. Graff 4151; Howes T264; Raines, p. 206; Sabin 95817.