| Issue | #721 |
| Published | September 1956 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | ? |
| Notes | Indicia title is "CAPTAIN KANGAROO, No. 721." Code number is CAPT.K. O.S. #721-568. Copyright 1956 by Keeshan-Miller Enterprises Corp. Most information for this issue from Karl Wilcox, January 2008. Mike Sekowsky art credit from Merlin Haas, Bob Bailey, and Steven Rowe, February 2008. First of three Captain Kangaroo Four Color issues. |
| Characters | Bob Keeshan (as Captain Kangaroo, photo); Bunny Rabbit (photo) |
| Genre | children |
| Pencils | ? (photo) |
| Inks | ? (photo) |
| Colors | ? (photo) |
| Notes | Indicia title is "CAPTAIN KANGAROO, No. 721." Code number is CAPT.K. O.S. #721-568. Copyright 1956 by Keeshan-Miller Enterprises Corp. Most information for this issue from Karl Wilcox, January 2008. Mike Sekowsky art credit from Merlin Haas, Bob Bailey, and Steven Rowe, February 2008. |
| Characters | Captain Kangaroo; Mr. Green Jeans |
| Synopsis | The Captain has spent the day fishing and only caught three shoes instead of fish. |
| Pencils | Mike Sekowsky |
| Notes | Inside front cover; black and white. |
| Characters | Captain Kangaroo; Grandfather Clock; Bunny Rabbit; Puppy Dog; Mr. Green Jeans |
| Synopsis | Grandfather Clock tells the story of the Wizard of Waz and his magic hat, using the Treasure House characters in the roles. |
| Pencils | Mike Sekowsky |
| Letters | Typeset |
| Characters | Captain Kangaroo; Puppy Dog; Bunny Rabbit |
| Synopsis | Puppy Dog stars in a parody of "King Kong," complete with dinosaurs and giant ape. |
| Pencils | Mike Sekowsky |
| Letters | typeset |
| Characters | Captain Kangaroo; Bunny Rabbit; Mr. Green Jeans |
| Synopsis | Bunny Rabbit is planting a garden to try to win a contest, but a pair of swallows are creating problems for him. |
| Pencils | Mike Sekowsky |
| Letters | typeset |
| Characters | Captain Kangaroo; Grandfather Clock; Mr. Green Jeans |
| Synopsis | The zoo has its grand opening, but Mr. Green Jeans has forgotten to mail the announcements to the newspapers, so no one is coming. Captain Kangaroo comes up with a plan to use some balloons for advertising. |
| Pencils | Mike Sekowsky |
| Letters | typeset |
| Characters | Captain Kangaroo; Grandfather Clock |
| Synopsis | Captain Kangaroo is fixing the toys in the Treasure House in order to donate them to the children in the hospital. At midnight the toys all come to life. One selfish doll has pretended to be broken so she won't have to go to the hospital. When she learns the rest of the toys will be leaving her, she tries to damage them so they'll be left behind with her. |
| Pencils | Mike Sekowsky |
| Letters | typeset |
| Characters | Captain Kangaroo; Mr. Green Jeans |
| Synopsis | The Captain and Mr. Green Jeans take a ride on a roller coaster. |
| Pencils | Mike Sekowsky |
| Letters | typeset |
| Notes | Inside back cover; black and white. |
| Characters | Captain Kangaroo; Mr. Green Jeans |
| Synopsis | The Captain is giving Mr. Green Jeans unsolicited advice about the care of his fruit tree. |
| Pencils | Mike Sekowsky |
| Letters | typeset |
| Notes | Back cover. The last panel is Dell's "A Pledge to Parents." |