 A later non-fiction book was about "Fitzroy of the Beagle," because a midshipman aboard Darwin's famous voyage round the world had the same surname of Mellersh (though no direct genealogical connection could be made).In 1921 Mellersh joined the Inland Revenue as a tax inspector.Let Loose (Selwyn and Blount, 1926)
Ill Wind (1930)
The Salt of the Earth (Chapman and Hall, 1931)


To mark the centenary of Mellersh's joining the army in 1915, three of his books were published as Ebooks in 2015.