William H. Emory and John Torrey correspondence, 1847-1857 - Emory, William H.
https://www.biodiversitylibrary.org/bibliography/61133
Keywords: Correspondence|Emory; William H. (William Hemsley); 1811-1887|Mexican-American Border Region|Plants|Scientific Expeditions|Torrey; John; 1796-1873|United States and Mexican Boundary Survey|West (U.S.)|