August Derleth was a seminal figure in the world of horror fiction, known for his contributions to the genre and his role in expanding the works of H.P. Lovecraft. As a writer, editor, and publisher, Derleth’s influence extends far beyond his own writings, playing a crucial role in shaping the landscape of modern horror. This article explores Derleth’s life, achievements, and lasting impact on the literary world.
Who Was August Derleth?
August Derleth (1909-1971) was an American writer and publisher best known for his work in the horror genre. Born in Sauk City, Wisconsin, Derleth became a key figure in the development of what is now known as the Cthulhu Mythos, a shared universe created by H.P. Lovecraft. His contributions to this mythos, along with his own works, have solidified his place in the annals of horror literature.
- Early Life and Education: Derleth showed an early interest in literature and writing. He attended the University of Wisconsin-Madison, where he began to hone his craft and develop his distinctive voice.
- Career Beginnings: Derleth’s career as a writer began in the 1930s. His early work included short stories and novellas, often published in pulp magazines. He quickly gained recognition for his horror and supernatural fiction.
Contributions to the Cthulhu Mythos
One of Derleth’s most significant contributions to literature was his role in developing and popularizing the Cthulhu Mythos. The Mythos, created by H.P. Lovecraft, is a shared universe featuring ancient cosmic deities and forbidden knowledge. Derleth’s involvement with the Mythos helped to establish and expand its influence.
- Collaboration with Lovecraft: Derleth was a close friend and correspondent of H.P. Lovecraft. After Lovecraft’s death in 1937, Derleth took on the task of preserving and continuing his friend’s work. He edited and published Lovecraft’s stories and wrote additional tales set in the Cthulhu Mythos.
- Expansion of the Mythos: Derleth expanded the Cthulhu Mythos by introducing new elements and deities. He developed the concept of the “Elder Gods” and the “Great Old Ones,” adding depth and complexity to the Mythos. His work helped to establish a more structured and coherent universe for Lovecraft’s creations.
- Publication Efforts: Derleth founded Arkham House in 1939, a publishing company dedicated to preserving and promoting Lovecraft’s work. Arkham House became a crucial outlet for the Cthulhu Mythos and other horror fiction. It published many of Lovecraft’s stories in collected volumes, ensuring their preservation for future generations.

August Derleth’s Own Works
In addition to his contributions to the Cthulhu Mythos, August Derleth was a prolific writer in his own right. His works spanned various genres, including horror, science fiction, and mystery.
- Horror Fiction: Derleth’s horror fiction often drew on themes similar to those found in the Cthulhu Mythos. His stories explored cosmic horror, the supernatural, and the unknown. Notable works include “The Lurker at the Threshold” and “The Trail of Cthulhu.”
- Science Fiction and Mystery: Beyond horror, Derleth wrote science fiction and mystery stories. His science fiction work includes “The Solar Pons” series, which featured a detective character inspired by Sherlock Holmes. His mystery stories often combined elements of the supernatural with classic detective plots.
- Editing and Anthologies: Derleth was also known for his work as an editor. He compiled and edited anthologies of horror and supernatural fiction, introducing readers to a wide range of writers and styles. His anthologies helped to shape the genre and showcase emerging talents.
The Legacy of August Derleth
August Derleth’s impact on the world of literature, particularly horror fiction, is significant and enduring. His efforts to preserve and expand the Cthulhu Mythos have made him a key figure in the genre’s history. Additionally, his own writings and publishing efforts have contributed to the development of modern horror.
- Influence on Horror Literature: Derleth’s work has influenced countless writers and creators in the horror genre. His expansion of the Cthulhu Mythos has become a foundational element in the genre, inspiring new generations of writers and readers.
- Arkham House and Publishing: Arkham House, founded by Derleth, remains an important publisher of horror and supernatural fiction. The press continues to publish works that reflect Derleth’s commitment to preserving and promoting the genre.
- Enduring Popularity: Derleth’s stories and contributions to the Cthulhu Mythos continue to be read and appreciated by fans of horror fiction. His work remains a vital part of the genre’s history and continues to captivate readers.
August Derleth was a pivotal figure in the development of modern horror fiction. His role in preserving and expanding the Cthulhu Mythos, along with his own contributions to the genre, has left a lasting impact on literature. Through his writing, editing, and publishing efforts, Derleth helped to shape the landscape of horror fiction and ensure the enduring legacy of H.P. Lovecraft’s creations.
For fans of horror and supernatural fiction, understanding the contributions of August Derleth provides valuable insight into the genre’s evolution and the enduring appeal of cosmic horror. His work remains a testament to the power of imagination and the fascination with the unknown.