GSL/L/R/6/72 | Letter from the COLONIAL OFFICE | 19 Dec 1840 | |
GSL/L/R/6/89 | Letter from Charles Giles Bridle DAUBENY | 15 Jan 1841 | |
GSL/L/R/19/69 | Letter from: Richard John Lechmer GUPPY | 16 Apr 1873 | |
GSL/L/R/19/79 | Letter from: Richard John Lechmer GUPPY | 8 Jul 1873 | |
LDGSL/1/14 | 'On the pitch lake of Trinidad' | 12 Jan 1810 | |
LDGSL/62 | Geological reports on oilfields and petroleum sources in Trinidad | 1927 | |
LDGSL/250 | Geological sections and proofs of fossils from Jamaica and Trinidad | [1865] | |
LDGSL/838/W/19 | Murchison correspondence: letter from George WALL | 4 Jan 1858 | |