« Reply #1 on: Wednesday 21 January 09 16:56 GMT (UK) »
The two main railroads were/are: Arequipa-Cuzco-Puno and Lima-Oroyo-Huancayo, so it is likely that his base was either Lima or Arequipa. Have you tried contacting the British embassy in Lima? Also the British consulate [I'm assuming there is one] in Arequipa?
I havn't looked on Google book search, but I would expect that there are books about the construction of these railroads - they were engineering marvels considering the very difficult terrain and elevations that had to be dealt with.
Wiltshire: Banks, Taylor
Somerset: Duddridge, Richards, Barnard, Pillinger
Gloucestershire: Barnard, Marsh, Crossman
Bristol: Banks, Duddridge, Barnard
Down: Ennis, McGee
Wicklow: Chapman, Pepper
Wigtownshire: Logan, Conning
Wisconsin: Ennis, Chapman, Logan, Ware
Maine: Ware, Mitchell, Tarr, Davis