[3] In August 1965, he used question time to draw attention to the fact that a senior public servant in the Department of Northern Development was a socialist.

[5] Gibbs was one of three Coalition backbenchers who visited the unrecognised state of Rhodesia in 1967, along with Jim Killen and Ian Pettitt.

[6] He "championed the Rhodesian cause" in parliament and in letters to newspapers,[7] and in 1968 called the United Nations a "menace to world peace" and a "blot on humanity" that had been infiltrated by communists.

He advocated a complete federal takeover of health services from the states, the removal of the means test for pensions, and free medical insurance for people on low incomes.

Their marriage broke up around the time that he lost his seat in parliament and divorced in 1975; Audrey (d. 2015) became a successful artist in later life.