1. Aleister Crowley Papers 1911–1944 and undated, Box 1. Special Collections Research Center, Syracuse University Libraries, Syracuse, NY.
2. Gerald Yorke Collection, NS117. Warburg Institute, University of London, London, EN.
3. Gerald Yorke Collection, NS22. Warburg Institute, University of London, London, EN.
4. Gerald Yorke Collection, NS23. Warburg Institute, University of London, London, EN.
5. Gerald Yorke Collection, NS37. Warburg Institute, University of London, London, EN.