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Detective Book Magazine was not a science fiction magazine, but rather a pulp magazine that focused on detective and mystery stories. It was published in the United States from 1922 to 1949. The magazine featured stories by a variety of authors and became known for its exciting and suspenseful stories. Although it did not specialise in science fiction, it occasionally published stories with elements of science fiction or speculative fiction. However, the main focus of Detective Book Magazine remained on the detective and mystery genres.