| ▲Título▼≋ | ▲Original▼≋ | ▲Año▼≋ | Idioma | ▲C▼⊗≋ | ▲V▼ |
|---|---|---|---|---|---|
| Letters to Fritz and Jonquil Leiber | 1936 | Inglés |   | — | |
| Carta a Farnese | To Harold S. Farnese, 22 September 1932 | 2008 | Español |  | — |
| To Harold S. Farnese, 22 September 1932 | 1932 | Inglés | | — | |
| Carta a Wright | To Farnsworth Wright, 5 July 1927   | 2008 | Español |  | — |
| To Farnsworth Wright, 5 July 1927 | 1927 | Inglés | | 9.00 | |
| Cartas a Clark Ashton Smith (fragmento) | Letters to Clark Ashton Smith | 2011 | Español | | — |
| Letters to Clark Ashton Smith | 1930 | Inglés | | — | |
| Una carta abierta a H.P. Lovecraft | An Open Letter to H.P. Lovecraft | 1991 | Español | | — |
| An Open Letter to H.P. Lovecraft | 1990 | Inglés | | — |