1930's Mars story for lads: "Cataclysm" by W. P. Cockroft

Thanks to another generous fan of old pulp magazines at the Internet Archive, you can read or download “Cataclysm,” a science fiction story of amazing inter-planetary adventure penned by British writer W. P. Cockroft, as it was originally published in the April 28, 1934 issue of Scoops, “Britain's only science story weekly.”

“Armageddon! The world goes mad, wars, revolts, lawlessness bring the Earth to the brink of destruction. Finally, the sinister spectre of the plague walks abroad and the end is nigh. A gallant band sets out to colonise the Red Planet.”