GSL/L/R/12/115
Letter from Thomas BLAND
1 Apr 1852
LDGSL/135
Proofs of figures of ammonites from Bogota, Columbia
1845
LDGSL/158
'An east and west section of the Primary Series as developed in New Granada'
1850
LDGSL/473
Geological and barometric section from Cartagena to the summit of Chinguasa, Colombia
[1831-1835]