Title: Correspondence
Subjects: Correspondence, Gratiola, Botanical specimens, Scrophulariaceae, Juncus, Isoetes nuttallii, Isoetaceae, Identification, Luzula, Juncaceae, Pinaceae, Collectors and collecting
People: Sereno Watson (1826-1892), George Engelmann (1809-1884), Geo. E. Davenport (1833-1907), Wilhelm Suksdorf (1850-1932), Thomas Howell (1842-1912), Daniel Cady Eaton (1834-1895)