| Issue | #4 |
| Published | July-September 1951 |
| Frequency | Quarterly |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | ? |
| Characters | Lassie |
| Genre | animal |
| Pencils | ? (painting) |
| Inks | ? (painting) |
| Colors | ? (painting) |
| Characters | Mr. Lawrence; Gerry Lawrence; Rocky Langford; Lassie; Slinger; Otto; Shorty; Captain Brine; Ling Lee (all in text only) |
| Letters | typeset |
| Notes | Summary of the story in Lassie #3. |
| Characters | Mr. Thomas Lawrence; Gerry Lawrence; Rocky Langford; Ling Lee; Captain Brine; Slinger; Otto; Shorty; Lieutenant da Silva |
| Synopsis | On leaving Piranga Islands with the treasure, the Sprite II is caught by a tidal wave and taken to land, leaving room for more encounters with the mutineers from issue #3. |
| Genre | animal |
| Letters | typeset |
| Notes | Story continued from M-G-M's Lassie #3. |
| Characters | none |
| Genre | animal |
| Notes | An overview of the locale of the main story of this issue. |
| Characters | Rocky Langford; Gerry Lawrence; Lassie |
| Genre | animal |
| Pencils | ? (painting) |
| Inks | ? (painting) |
| Colors | ? (painting) |