Robert Lindsay Mackay’s First World War Diary.
This is the First World War Diary of my Grandfather, Robert Lindsay Mackay, OBE, MC, MB, CHB, MD, DPH, giving an account of his day-to-day life with the 11th Batallion of the Argyll and Sutherland Highlanders from 1915 until the end of the war.
-Bob Macaky, (adapted to web, 2000)
Adapted to google maps by J Hooker (Great Grandson), 2013.
Sources:
http://lu.softxs.ch/mackay/RLM_Diary.html
http://en.wikipedia.org/wiki/First_Battle_of_the_Somme
http://www.1914-1918.net/maps/sommegibb.jpg
http://repository.mcmaster.ca/fedora/repository/macrepo:3991