Thanks to everyone who answered my query about Newfoundland. I appreciate your help.
It would be interesting to know what other comments you received.
In the meantime, I e-mailed a friend who is a well-known Newfoundland author and his reply is:
St. John's, Newfoundland should be sufficient. A site called "Grand Banks" has much information re NL ancestors.
We were a "Commission of Government" managed by the UK Colonial Office from the Depression until 1949.