Notes on the History of 521 Field Survey Company R.E.
Based on four sources of historical material : -
a. Brigadier A.B. Clough’s monograph “Maps and Survey”, H.M.S.O., 1952.
b. References, mainly war diaries, held in the National Archives at Kew.
c. Anecdotal souvenir histories produced by the units.
d. Personal accounts or reminiscences and correspondence regarding the same.