Post Office Telephones Exchange Diary 25/9/1948 to 16/2/1974, which hung in the Tiree cable hut at Caoles. The cable hut was where the submarine cable from Mull connected to the Tiree exchange (via Coll).
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One of the first and longest serving telephone engineers was Donald Quintin Campbell, whose signature appears next to most entries in the diary during 1948-1968.