| Issue | #66 |
| Published | June 1975 |
| Frequency | monthly except May, October and December |
| Cover Price | 1.00 USD |
| Pages | 76 |
| Editing | Bill DuBay, Louise Jones (assistant editor) |
| Notes | Letter Page: 2, Back cover ad for Eerie #67 Paul Neary, Esteban Maroto art |
| Characters | El Cid |
| Pencils | Manuel Sanjulian (Painted) |
| Inks | Manuel Sanjulian (Painted) |
| Colors | Manuel Sanjulian (Painted) |
| Letters | typeset |
| Characters | El Cid; Cousin Eerie |
| Pencils | Bernie Wrightson |
| Inks | Bernie Wrightson |
| Characters | El Cid |
| Script | Budd Lewis (script); Bill DuBay (plot) |
| Pencils | Gonzalo Mayo |
| Inks | Gonzalo Mayo |
| Characters | El Cid |
| Script | Budd Lewis (script); Bill DuBay (plot) |
| Pencils | Gonzalo Mayo |
| Inks | Gonzalo Mayo |
| Characters | El Cid |
| Script | Budd Lewis (script); Gerry Boudreau (plot) |
| Pencils | Gonzalo Mayo |
| Inks | Gonzalo Mayo |
| Characters | El Cid |
| Script | Budd Lewis (script); Gerry Boudreau (plot) |
| Pencils | Gonzalo Mayo |
| Inks | Gonzalo Mayo |
| Characters | El Cid |
| Script | Budd Lewis (script); Jeff Rovin (plot) |
| Pencils | Gonzalo Mayo |
| Inks | Gonzalo Mayo |