Fonds consists of a small part of the records relating to the company's Newfoundland cables, mainly engineers' and other reports, both originals and photocopies.

Fonds is arranged in three series: Engineers' reports, 1874-1926; General reports, 1910-1930; and Diaries and logbooks, 1866-1926.

Fonds contains 6 individual diaries containing daily entries made by the telegraph operator at Little Harbour, La Poile Bay. The entries relate to the movement of vessels in the area, weather, fishing and sealing, community events and recreational pursuits. From 1885-1921 the diaries were kept by Robert J. Henderson and from 1938-1948, by George Henderson.