According to the Locus index, the title for the introduction in "Episodes of the Argo" was just "Introduction" (which corresponds to the data in ISFDB). In "Castle of Days" (which reprints the intro), the essay is titled "Introduction for Episodes of the Argo" which is why we have this variant title.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| December 1992 |
|
Castle of Days | Tor | Omnibus | 339 |
| April 1995 |
|
Castle of Days | Orb | Omnibus | 336 |
| December 2020 |
|
Feast of Laughter, Volume 5 | Ktistec Press | MAGAZINE | 135 |