First, in "Bar Z Bad Men," it's open season on rustlers when smilin' Johnny Mack Brown digs for blue lightnin', mills a herd of stampeding beef on the hoof and wins the hand of pretty maiden Lois January. With Ernie Adams, Jack Rockwell and Tom London. Then, in "A Lawman Is Born," Brown is a neophyte sheriff who receives a baptism of fire when he tries to stop cattle rustlers from stealing settlers' land. Co-stars Iris Meredith, Warner Richmond. 110 min. total. Standard; Soundtrack: English. Plays All Regions.