A letter from Jane, who is nursing British troops, asks Tarzan’s help in obtaining a malaria serum extractable from jungle plants. Tarzan and Boy set out across the desert looking…

A town bedeviled with outlaws sends for Hoppy, Lucky and California after their own vigilante committee fails to solve the towns problems. Hoppy discovers that the bad guys are led…

Hoppy and Lucky are headed to South America to deliver a heard of cattle. Bay guy Ralph Merritt gets in their way. For a while.

John Abbott returns to the desert land he owns, and after being wounded by hired gunman Chick Chance, he is befriended by rancher Andrew Naab and his son, Marvin. Naab’s…

A crusading newspaper editor recruits his old friend Hoppy to take the job of Marshall in a town rife with vice and murder directed at helpless miners.

Hoppy goes undercover as an outlaw (which permits him, for once, to drink and be mean to children) to track down a bunch of outlaws operating along the border. Loco,…

Hopalong Cassidy, boss of the Bar 20 ranch in Texas, rides down the Camino Real in the New Mexico cattle country near Alamogordo, in response to an urgent message from…