Always thinking of the needs of those in isolated communities, in September 1910 Flynn published The Bushman's Companion which was distributed free throughout inland Australia.

He took up the opportunity to succeed E. E. Baldwin as the Smith of Dunesk Missioner at Beltana, a tiny settlement 500 kilometres north of Adelaide.

The missioners visited the station properties in a wide radius of Beltana, and their practical and spiritual service was valued in the isolated localities.

By 1912, after writing a report for his church superiors on the difficulties of ministering to such a widely scattered population, Flynn was made the first superintendent of the Australian Inland Mission which became Frontier Services.

This material was published in the church's magazine, the start of Flynn turning his considerable fund-raising talents to the task of establishing a flying medical service.

[6] His widow Jean died at the Pitt Wood Presbyterian nursing home in Ashfield, Sydney, New South Wales on 27 August 1976.

[9] The Royal Flying Doctor Services still continues to deliver Flynn's vision of a 'Mantle of Safety' to the people of outback Australia.