Title: Correspondence
Subjects: Plants, Salicaceae, Rhamnaceae, Rubiaceae, Heuchera, Wood, Cruciferae, Hybridization, Correspondence, Botanical specimens, Arabis, Pteridophyta, Juglandaceae, Galium, Sapindaceae, Cheilanthes, Saxifregaceae, Collectors and collecting, Rosaceae
Places: Jefferson County, Saint Louis County, Franklin County, Missouri
People: George Engelmann (1809-1884), George W. Letterman (1840-1913), Charles Sprague Sargent (1841-1927), Thomas Meehan (1826-1901), J. Reverchon (1836-1905), Augustus Fendler (1813-1883), William Marriott Canby (1831-1904), Asa Gray (1810-1888), Henry Eggert (1841-1904), George Vasey (1822-1893)