Novels:
* The Bride of the Regiment (1932)
* The Man in the Iron Mask (1937) - a historical fiction novel about the famous masked prisoner
* The Man Who Dared to be Free (1939)
* The Secret of the Black Gate (1940)
* The Lion of Africa (1941)
* The Scarlet Sword (1942)
* The Black Citadel (1943)
* The Silent Command (1944)
* The Flame of the North (1945)
* The Iron Duke (1946)
* The Golden Eagle (1947)
* The King's Secret (1948)
* The Red Stallion (1949)
* The Last Frontier (1950)
* The White Knight (1951)
* The Queen's Messenger (1952)
* The Emperor's Spy (1953)
* The Crimson Rider (1954)
* The Sunken Treasure (1955)
* The Black Arrow (1956)
* The Silver Sword (1957)
* The Secret of the Sea (1958)
* The Lost Island (1959)
* The Mystery of the White Ship (1960)
Other Works:
* The Wild West (1936) - a collection of short stories
* The Adventures of Don Coyote (1941) - a humorous novel for children
* The Adventures of Jack and Jill (1944) - a children's book
* The Boy Scout Handbook (1945) - a revised edition of the Boy Scout handbook
* The Girl Scout Handbook (1945) - a revised edition of the Girl Scout handbook
Coxe also wrote numerous short stories for magazines and contributed to several anthologies.
It's important to note that his writing was often based on historical events and popular figures. He was known for his action-packed, adventure-filled stories and his ability to bring history to life for a wide audience.