The article links to another about Mary Arnold-Forster, considered a pioneer in lucid dreaming. She wrote a book titled "Studies in dreams", available on archi

The article links to another about Mary Arnold-Forster, considered a pioneer in lucid dreaming. She wrote a book titled "Studies in dreams", available on archive.org: https://archive.org/details/studiesindreams00arnogoog https://archive.org/details/studiesindreams00arnogoog