Cowboys from Texas is a 1939 American Western "Three Mesquiteers" B-movie directed by George Sherman.Texas has opened up land for homesteaders. Clay Allison wants their land and has his men led by Plummer try to start a range war between them and the ranchers. With each side suspecting the other of their problems, the Mesquiteers realize someone else is responsible. Stony suspects Plummer and fakes leaving the Mesquiteers to join Plummer's gang hoping to find out who it is.
The night before his grandson, Tommy Grayson, a mechanic at the Midland Aircraft Corporation, is to marry Gail, a former showgirl, Major Matt Grayson, a war veteran and watchman at the plant, catches two men breaking into the machine shop. The men run, but the major shoots one of them.....
Homesteaders are moving into the valley settled many years ago by rancher Craig Dolan. He wants to keep them out by legal means but his nephew Bart brings in outlaws to drive them out. The Lone Ranger is on hand to help the homesteaders battle Bart's men as he overcomes traps, ambushes, burning buildings and other obstacles in his attempt to bring peace to the valley.
Complications ensue after a radio producer insults a sponsor.
After she inherits a fortune, Ann Clemance travels to Paris to indulge herself in frivolity. She meets up with an old friend, writer Adrian Torrens, who disparages her lifestyle. Ann sees him befriend an Apache dancer and she believes he finds women in need of salvation more appealing.