| Issue | #90 |
| Published | February 1977 |
| Cover Price | 0.15 USD |
| Pages | 36 |
| Editing | Sid Jacobson |
| Characters | Richie Rich |
| Genre | Children |
| Pencils | Warren Kremer |
| Inks | Warren Kremer |
| Notes | Ad for a music box from Colonial Studios, White Plains, N.Y. |
| Characters | Richie Rich; Gloria |
| Synopsis | Richie shows Gloria his wind-up Cadbury toy. |
| Genre | Children; Humor |
| Notes | Ad for misc. products from Dollar Bargains, Newark, N.J. |
| Notes | Ad for The New Casper Cartoon Show from abc TV. |
| Characters | Richie Rich; Mrs. Rich; Uncle Keno |
| Synopsis | Richie finds a secret door in his bedroom that leads him to his Uncle Keno's lab. |
| Genre | Children; Adventure |
| Reprinted | In Richie Rich Cash (Harvey, 1974 series) #10. |
| Characters | Richie Rich; Gloria |
| Synopsis | Richie shows Gloria balloon replicas of themselves, his parents,Cadbury and Reggie. |
| Genre | Children; Humor |
| Reprinted | In Richie Rich Cash (Harvey, 1974 series) #10. |
| Characters | Little Dot |
| Synopsis | While the other kids look through knotholes to see a ball game for free, Dot stares at a painted dot on the fence. |
| Genre | Children; Humor |
| Characters | Richie Rich; Cadbury |
| Synopsis | Cadbury tells Richie about his former profession as a body guard. |
| Genre | Children; Humor |
| Reprinted | In Richie Rich Cash (Harvey, 1974 series) #10. |
| Notes | In-house promo for upcoming Harvey comics. |
| Notes | Ad for the new season of Saturday morning cartoons on NBC. |
| Notes | In-house promo for upcoming Harvey comics. |
| Characters | Little Dot; Mrs. Polka; Aunt Blue; Little Lotta; PeeWee; Gerald |
| Synopsis | Dot's Aunt Blue depresses everyone around her. |
| Genre | Children; Humor |
| Reprinted | In Richie Rich Cash (Harvey, 1974 series) #10. |
| Synopsis | Lotta wins a live turkey for Thanksgiving. |
| Genre | Children; Humor |
| Letters | Typeset |
| Characters | Little Lotta; Mr. Plump |
| Synopsis | Lotta's strength comes in handy on a hiking trip. |
| Genre | Children; Humor |
| Reprinted | In Richie Rich Cash (Harvey, 1974 series) #10. |
| Notes | Ad to sell newspapers for The Grit Publishing Co., Williams Port, PA |
| Notes | Ad for collectible postage stamps approval service from Garcelon Stamp Co., Calais, ME. |
| Notes | Ad for NFL mini-helmets from Pro-Football Merchandising, Inc., Union City, N.J. |
| Notes | Two half-page ads for misc. products from Honor House Prod. Corp., Lynbrook N.Y. |
| Notes | Ad for four framable art prints from Colonial Studios, White Plains N.Y. |