First edition (unknown printing) [a second edition was published in 1980]. Tight, flat, square, clean and sharp book. Glossy boards with wraparound painting, pictorial endpapers. Toned pages, margins darker.

Timmy and Lassie help their new neighbors in dealing with an escaped convict and and other problems on their new farm in the forbidden valley.

Dog stories have been a favorite juvenile subject since the genre began. Terhune's Lad: A Dog would be the direct antecedent to Lassie.