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Jimgrim/Ramsden

* Guns of the Gods (1921)
* The Winds of the World (1917)
* Hira Singh's Tale (1918)
* King — of the Khyber Rifles (1916)
* Jimgrim and Allah's Peace (1936)
* The Seventeen Thieves of El-Kalil
* The Lion of Petra (1932)
* The Woman Ayisha (1924)
* The Lost Trooper
* The King in Check (1933)
* The Mystery of Khufu's Tomb (1935)
* The Caves of Terror (variant title The Gray Mahatma, 1924)
* Jungle Jest (1932)
* The Marriage of Meldrum Strange
* Om: The Secret of Ahbor Valley (1924)
* The Hundred Days (1931)
* The Nine Unknown (1923)
* The Devil's Guard (variant title Ramsden, 1926)
* Jimgrim (1931)
* The Gunga Sahib (1934)
* C.I.D. (1932)
* The Red Flame of Erinpura

Tros of Samothrace

* Tros of Samothrace (1925)
* Queen Cleopatra (1929)
* Purple Pirate (1935)
* Liafail (1925)
* Helma (1925)

Non-series

* Rung Ho! (1914)
* The Ivory Trail (1917)
* Black Light (1930)
* All Four Winds: Four Novels of India (omnibus, 1932)
* Full Moon (variant title, There Was a Door, 1935)
* The Thunder Dragon Gate (1937)
* Old Ugly Face (1940)