| Issue | #51 |
| Published | October-December 1960 |
| Frequency | quarterly |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | George T. Delacorte, Jr. (Publisher); Helen Meyer (President); Paul R. Lilly (Executive Vice President); William F. Callahan, Jr. (Vice President); Harold Clark (Vice President-Advertising Director); Albert P. Delacorte (Treasurer) |
| Characters | Lassie; Timmy [as portrayed by Jon Provost] |
| Genre | adventure; animal; children |
| Pencils | ? (color photo) |
| Inks | ? (color photo) |
| Colors | ? (color photo) |
| Notes | front cover |
| Characters | Lassie; Timmy; Ruth Martin; Paul Martin; Waldo Johnson (Timmy's friend); "Dutch" Karg (thug); Policemen; Technicians |
| Synopsis | Lassie, Timmy, and their friend Waldo come into contact with radioactive isotopes. |
| Genre | adventure; animal; children |
| Pencils | Bob Fujitani ? |
| Letters | typeset |
| Characters | Blaze; Ted Baily; Uncle Tom; Aunt Mae; Boyd Banghart; Gypsy (heifer) |
| Synopsis | Blaze and Ted round-up a runaway heifer. |
| Genre | adventure; animal; children |
| Letters | typeset |
| Characters | King; Burt Hammond; Amy Hammond; Baby |
| Synopsis | King saves a baby from a house fire. |
| Genre | adventure; animal; children |
| Letters | typeset |
| Characters | Lassie; Timmy; Ruth Martin; Paul Martin; "Stump" Wilson (Timmy's schoolmate); Mr. and Mrs. Wilson (Stump's parents); "Rocky" Boyd (Timmy's schoolmate); Ross Manly (sheep farmer); Sheepherder; Cook; Truck Stop Diners |
| Synopsis | Timmy and Lassie run away when Lassie is accused of sheep-killing. |
| Genre | adventure; animal; children |
| Letters | typeset |