Watch FMovies. 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.