Matty Roubert

Charles Starrett once more dons the mask of mysterious do-gooder "The Durango Kid" in Columbia's Challenge of the Range. Wandering cowboy Steve Roper (Starrett) is hired by the Farmers Association to stem the activities of a group of gunmen who are driving ranchers off their land. The most likely suspect turns out to be innocent: the real culprits are within the Association itself. With the help of the chief suspect's son, Roper brings the crooks to justice.

When Decker's gang holds up a stage, henchman Lefty takes a lady's rings. Later lefty accidentally exposes the rings buying ammunition and Cheyenne sees them. When Lefty tries to shoot Cheyenne he is captured. Now Cheyenne wants the rest of the gang and their leader.

Eddie and his sidekicks have been called in to help get a new telegraph line through. Dawson and his men along with his stooge Judge are out to stop them. When Eddie and the boys catch three of Dawson's men destroying telegraph equipment, the Judge releases them and this leads to the showdown between the two sides.

In San Francisco, detective partners Jack Packard and Doc Long are hired by socialite Jefferson Monk who believes someone is following him with the aim to kill him.

The Rough Riders are called in to help save Master's stage line. Taggart has his gang robbing the stages and shooting the drivers. When Buck drives the next stage, Taggart's men rob it and then make it look like Roberts is part of the gang. Written by Maurice Van Auken

Two Virginians are heading for a new life in Texas when they witness a stagecoach being held up. They decide to rob the robbers and make off with the loot. To escape a posse, they split up and don't see each other again for a long time. When they do meet up again, they find themselves on different sides of the law. This leads to the increasing estrangement of the two men, who once thought of themselves as brothers.

Produced by the Aluminum Company of America (Alcoa) in 1940 and released in 1941 , Unfinished Rainbows traces the history of aluminum in brief, dramatic episodes. It shows the challenges presented to the youth of the 1940s of the opportunities in the world of chemistry.

The story opens as Stony returns to his home town, only to discover that his sheriff father has been murdered by person or persons unknown. The new sheriff (Henry Brandon) resents the arrival of the Mesquiteers, going so far as to frame Tucson on a murder charge.

Calvin Drake employs a group of low-lifes to drive away land owners along the path of a new railroad; Red Ryder opposes this strategy.

Years after she was presumed dead in a shipwreck, Ellen Arden returns home to the surprise of her husband recently remarrying. But he too gets a shock when he learns that Ellen spent her time alone on an island with another man.