With a litte more research, here's a list of all of his major works:
Dawn (1884)
The Witch's Head (1884)
King Solomon's Mines (1885)
She (1887)
Jess (1887)
Allan Quatermain (1887)
A Tale of Three Lions (1887)
Mr. Meeson's Will (1888)
Maiwa's Revenge (1888)
My Fellow Laborer and the Wreck of the Copeland (1888)
Colonel Quaritch, V.C. (1888)
Cleopatra (1889)
Allan's Wife (1889)
Beatrice (1890)
The World's Desire (1890) (co-written with Andrew Lang)
Eric Brighteyes (1891)
Nada the Lily (1892)
Montezuma's Daughter (1893)
The People of the Mist (1894)
Joan Haste (1895)
Heart of the World (1895)
Church and State (1895)
The Wizard (1896)
Dr. Therne (1898)
Swallow (1898)
A Farmer's Year (1899)
The Last Boer War (1899)
The Spring of Lion (1899)
Montezuma's Daughter (1899)
Black Heart, White Heart (1900)
The New South Africa (1900)
A Winter Pilgrimage (1901)
Lysbeth (1901)
Rural England (1902)
Pearl Maiden (1903)
Stella Fregelius (1904)
The Brethren (1904)
The Poor and the Land (1905)
Ayesha (1905)
A Gardener's Year (1905)
Report of Salvation Army Colonies (1905)
The Way of the Spirit (1906)
Benita (1906)
Fair Margaret (1907)
The Ghost Kings (1908)
The Yellow God (1908)
The Lady of Blossholme (1909)
Queen Sheba's Ring (1910)
Regeneration: An account of the social work of the Salvation Army (1910)
Morning Star (1910)
Red Eve (1911)
The Mahatma and the Hare (1911)
Rural Denmark (1911)
Marie (1912)
Child of Storm (1913)
The Wanderer's Necklace (1914)
A call to Arms (1914)
The Holy Flower (1915)
After the War Settlement and Employment of Ex-Service Men (1916)
The Ivory Child (1916)
Finished (1917)
Love Eternal (1918)
Moon of Israel (1918)
When the World Shook (1919)
The Ancient Allan (1920)
Smith and the Pharaohs (1920)
She and Allan (1921)
The Virgin of the Sun (1922)
Wisdom's Daughter (1923)
Heu-Heu (1924)
Queen of the Dawn (1925)
The Days of my Life: An autobiography of Sir H. Rider Haggard (1926)
Treasure of the Lake (1926)
Allan and the Ice Gods (1927)
Mary of Marion Isle (1929)
Belshazzar (1930)
The man could write.....