| Colecciones Españolas | Colecciones USA | Personajes | Autores | Comics Españoles | Comics USA | Sagas |
| Apariciones de (Dr. Spectrum (Tierra-712) (Joseph Ledger): 37 |
| Nombre del Personaje: | Dr. Spectrum (Tierra-712) (Joseph Ledger) |
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| Nombre Real: | ||
| Biografía: |
| Título Colección | Número | VAR-LGY | Mes | Año |
|---|---|---|---|---|
| The Avengers, Vol. 1 | 141 | [141] | NOV | 1975 |
| The Avengers, Vol. 1 | 142 | [142] | DIC | 1975 |
| The Avengers, Vol. 1 | 144 | [144] | FEB | 1976 |
| The Avengers, Vol. 1 | 147 | [147] | MAY | 1976 |
| The Avengers, Vol. 1 | 148 | [148] | JUN | 1976 |
| The Avengers, Vol. 1 | 149 | [149] | JUL | 1976 |
| Thor, Vol. 1 | 280 | [280] | FEB | 1979 |
| Squadron Supreme, Vol. 1 | 1 | SEP | 1985 | |
| Squadron Supreme, Vol. 1 | 4 | DIC | 1985 | |
| Squadron Supreme, Vol. 1 | 5 | ENE | 1986 | |
| Squadron Supreme, Vol. 1 | 6 | FEB | 1986 | |
| Squadron Supreme, Vol. 1 | 7 | MAR | 1986 | |
| Squadron Supreme, Vol. 1 | 8 | ABR | 1986 | |
| Squadron Supreme, Vol. 1 | 9 | MAY | 1986 | |
| Squadron Supreme, Vol. 1 | 11 | JUL | 1986 | |
| Squadron Supreme, Vol. 1 | 12 | AGO | 1986 | |
| Squadron Supreme: Death of A Universe | 0 | 1989 | ||
| What If, Vol. 2 | 1 | JUL | 1989 | |
| Quasar | 13 | AGO | 1990 | |
| Quasar | 14 | SEP | 1990 |
| Primero | Anterior | 5- | 1 | 5+ | Siguiente | Último |