Which author has wrote the most books?

Charles Hamilton (1876-1961) is known for having about a 100 million words and having written the equivalent of 12,000 average length novels. This makes him the most prolific writer in history. Charles Hamilton was born in Ealing, England. He was educated at Thorn House School where he learned a traditional education which included Classical Greek. He first began writing in 1895. In a few years his writing career took off with Trapps Holms Publishing which he continued to write for until 1915. In 1906, he also began to write for Amalgamated Press who would write many of his stories.

The stories he told varied widely, from detective stories to Westerns. He is most well-known for his school stories which tended to revolve around the lives of public school boys. An example would be the fictional Greyfriars school which was the setting for many of his stories. 5,000 of his stories have been found and attributed to him and 3,100 of them have been reprinted.