When does The Adventures of Rin-Tin-Tin return?

Lee Aaker played Rusty, a boy orphaned in an Indian raid, who was being raised by the soldiers at a US Cavalry post known as Fort Apache. Rusty and his German Shepherd dog, Rin Tin Tin (Rinty), help the soldiers to establish order in the American West. Co-stars included Joe Sawyer and Rand Brooks as Corporal Randy Boone.