| Issue | #20 |
| Published | May 1967 |
| Frequency | quarterly |
| Cover Price | 0.25 USD |
| Pages | 68 |
| Editing | Leon Harvey |
| Characters | Wendy; Witch Sisters [Thelma; Zelma; Velma] |
| Characters | Casper; Lyndon (first appearance); Lyndon's mother (first appearance) |
| Characters | Wendy; Witch Sisters; Invisimen (introduction); Buddy Bear (introduction); Fenwick Fox (introduction); Eddie Elf (introduction); Wilbur Wizard (introduction); Warren Warlock (introduction) |
| Notes | Part 1 of story. |
| Characters | Wendy; Witch Sisters; Invisimen (including Flubbly); Warren Warlock; Wilbur Wizard; King No-See (introduction) |
| Notes | Part 2 of story. |
| Characters | Casper; Nightmare; Spooky; Ghostly Trio; Marvin Muddle (introduction); Mabel Muddle (introduction) |
| Characters | Spooky |
| Characters | Spooky; Spooky Bird (introduction) |
| Letters | typeset |
| Letters | typeset |
| Characters | Wendy; two sorcerers (villains; introduction) |
| Characters | Casper |
| Characters | Wendy |
| Characters | Wendy |
| Characters | Wendy; a little tree (introduction) |
| Characters | Wendy |
| Characters | Wendy; Witch Sisters |
| Notes | Story takes place on Wendy's birthday. (Probably the day the Witch Sisters adopted her.) |
| Characters | Casper; Mrs. McScream (introduction); Misty (introduction; a ghost puppy); a witch (villainess; introduction) |
| Letters | typeset |
| Letters | typeset |
| Characters | Spooky |