Marshall, R. B., 1867-1949 (Nombre personal)

Geological Survey (U.S.). Topography, District of Columbia, 1915?: map recto (R.B. Marshall, chief geographer)

Results of spirit leveling in Utah, 1915: t.p. (R.B. Marshall)

RLIN, 4/7/95: (hdg.: Marshall, Robert Bradford, 1867-1949)

Topographic map of the Island of Kauai, 1912: map recto (R.B. Marshall, chief geographer)