Title: Correspondence
Subjects: Correspondence, Isoetaceae, Wolffia, Liliaceae, Ericaceae
People: Sereno Watson (1826-1892), George Engelmann (1809-1884), William Henry Leggett (1816-1882), William Marriott Canby (1831-1904), John Donnell Smith (1829-1928), Henry William Ravenel (1814-1887), Christoph Friedrich Hegelmaier (1833-1906), Asa Gray (1810-1888), George Vasey (1822-1893)