Title: Correspondence
Subjects: Correspondence, Plants, Botanical specimens, Euphorbiaceae, Classification, Milkweeds, Asclepiadaceae, Collection and preservation, Smithsonian Institution, Euphorbia
Places: United States, Texas
People: Thomas Nuttall (1786-1859), George Engelmann (1809-1884), William H. Emory (1811-1887), Charles Wright (1811-1885), William Oakes (1799-1848), Henry Shaw (1800-1889), Augustus Fendler (1813-1883), Asa Gray (1810-1888)