Season 12

1965-09-12

1965-09-19

1965-09-26

In an area being developed for swimming and fishing, two youngsters playing hooky wander into the blasting zone. Lassie is able to bring help and rescue the boys.

1965-10-03

1965-10-10

1965-10-17

1965-10-24

1965-10-31

1965-11-07

A flooded river threatens to sweep away a bridge construction project. Ranger Corey Stuart and Lassie brave the raging waters in a small boat to construct a log chain barrier and control the flow of water and logs.

1965-11-14

1965-11-21

1965-11-28

1965-12-05

1965-12-12

1965-12-19

1965-12-26

1966-01-02

1966-01-16

1966-01-23

1966-01-30

1966-02-06

1966-02-13

A bloodhound needs to be relocated, but he dislikes all his new abodes.

1966-02-20

Corey and another ranger battle a spruce bud worm infestation by spraying but meet resistance from a horse ranch owner. Lassie makes friends with a colt and reveals the true cause of death of one of the horses.

1966-02-27

1966-03-06

1966-03-13

1966-03-20

1966-03-27

1966-04-03

1966-04-17

1966-04-24

1966-05-01