Hasluck was a sub-editor of the university magazine Black Swan and enrolled in an honours course, but had to discontinue her research on the Arthurian legend for financial reasons.

Historians of the period are certain that if Hasluck had still been Governor-General in 1975, as he would have been had his wife not intervened, the constitutional crisis of that year would have ended differently.

Her early interests included medieval England, and in the 1930s she wrote a historical novel titled Tudor Blood which was rejected for publication.

[1] Hasluck published eleven books on history as well as a collection of short stories and an autobiography.

Her writing was targeted at general readers and "brought the history of Western Australia to a popular audience at a time when the State's historiography was in its infancy".