This collection is comprised of publications, field notes, photographs, and correspondence by Joseph Francis Charles Rock. Rock worked as a botanist, anthropologist, explorer, linguist, and author for various agencies while travelling in Asia. Rock’s affiliation with the Arnold arboretum was that of a researcher in China and Tibet from 1924-1927. The bulk of this collection consists of correspondence, records, and images developed during that visit

Included are surveys for Bristol and Essex counties and the Arnold Arboretum of Jamaica Plain, Massachusetts. Also included are sixteen sectional survey maps for the southern part of Essex County, Massachusetts and a survey map for the Arnold Arboretum.