| ▲Título▼≋ | ▲Original▼≋ | ▲Año▽≋ | Idioma | ▲C▼⊗≋ | ▲V▼ |
|---|---|---|---|---|---|
| The Falsity of Astrology | 1914 | Inglés |   | — | |
| The Fall of Astrology | 1914 | Inglés | | — | |
| Delavan’s Comet and Astrology | 1914 | Inglés | | — | |
| Astrology and the Future | 1914 | Inglés | | — | |
| A defense of Astrology | 1914 | Inglés | | — | |
| To the Editor of The All-Story Cavalier, January 1913 | 1913 | Inglés |  | — | |
| Trans-Neptunian Planets | To the Editor of the Scientific American, 16 July 1906   | 1906 | Inglés | | — |
| To the Editor of the Scientific American, 16 July 1906 | 1906 | Inglés | | — | |
| To Sibyl Cropper, 1903 | 1903 | Inglés | | — |