GSL/OB/9
Murchison's 'Silurian Hammer'
[c.1830]
LDGSL/838/B/40
Murchison correspondence: letters from George BACK
[1860s]
LDGSL/838/B/40/1
Murchison correspondence: letter from George BACK
10 Jul 1867
LDGSL/838/B/40/2
LDGSL/839/143
Murchison fieldbooks & diaries: England, Royal Institution, Oxford and Geological Society
Jan-Jun 1825